Product Image

Thyroid Energy

NOW
4.6
★ ★ ★ ★ ★
(18591 ratings)
Iodine 225 mcg
Zinc 25 mg
Copper 1 mg
Ashwagandha 50 mg
Product Image
Score82
A well-constructed thyroid nutrient formula with strong forms, but it needs careful matching to thyroid status and medication.
How scoring works
Quantity:180 Capsule(s) • (90 servings)
Goals:
Metabolism Boost
Hair Health
General Health
Energy
Immunity
Bone Health
Skin Health

Score 82

A well-constructed thyroid nutrient formula with strong forms, but it needs careful matching to thyroid status and medication.
How scoring works

Also available as

1 option
90 servings Ashwagandha 50 mg, Copper 1 mg +2 more • 90 Capsule(s) • 45 servings $12.70 ($0.28 per serving)
$22.25($0.24 per serving)
Vitacost
$ 23.27
Daily Vita
$ 23.10
iHerb
$ 24.49
Amazon
$ 22.25
Walmart
$ 24.99
Report prices

Analysis

The two-capsule serving provides potassium iodide, L-OptiZinc, selenomethionine, copper, one gram of tyrosine, and methylcobalamin. These nutrients support several steps involved in thyroid-hormone production and metabolism.

Guggul and ashwagandha add botanicals that may influence thyroid activity, while their standardized marker amounts are shown. The formula is not appropriate as a casual energy supplement because iodine needs vary substantially.

The larger bottle offers good long-term value for people specifically advised to use this combination. Anyone with thyroid disease or thyroid medication should review it before starting.

Who is it for
  • Adults with a defined thyroid-nutrient plan
  • People seeking iodine with tyrosine and selenium
  • Users working with a thyroid clinician
Best for
  • Thyroid-oriented nutrient coverage
  • Iodine and tyrosine combination
  • Hair and metabolism support when intake is appropriate

Pros

  • Uses potassium iodide
  • Includes methylcobalamin and selenomethionine
  • Provides substantial tyrosine

Cons

  • Not suitable for casual energy use
  • Ashwagandha amount is modest
  • Two-capsule serving

Warnings

  • Iodine, guggul, and ashwagandha may alter thyroid function or thyroid-medication needs
  • Separate mineral-containing supplements from levothyroxine according to prescriber instructions
  • The 25 mg zinc amount should not be stacked long term with other high-zinc products

Nutrient quality

83 Highest impact

Tyrosine, iodine, zinc, selenium, copper, methylcobalamin, guggul, and ashwagandha use useful forms and relevant doses. Iodine and zinc are comparatively high, and the broad goal list extends beyond what this thyroid-focused formula directly covers.

Ingredient transparency

83 Highest impact

Every active has a specific amount and no proprietary blend hides the doses. Complete intake directions and inactive capsule ingredients are not supplied.

Customer satisfaction

72 High impact

The aggregate rating is favorable and supported by a useful number of reviews. No specific review comments were supplied, so repeated complaints and purpose-related experiences cannot be verified.

Value for money

89 Highest impact

Strong forms, clear doses, and a focused profile support very good value. The formula is most competitive for thyroid-focused use rather than the many broader goals listed.

Report analysis

Goals

Metabolism Boost
Metabolism Boost
Impact
Highest effect
B+ Goal FitA Strength of SupportB+ CoverageA Formula Quality
Vitamin B12 · 60 mcgVitamin B6 · 2 mgZinc · 25 mg

Thyroid Energy has a direct metabolism fit through its disclosed thermogenic, thyroid, mitochondrial, or glycemic-support ingredients.

Dose quality and formula structure support a strong contribution, while evidence context and formula complexity remain the main constraints.

Study evidence
Iodine Mixed 17 studies
Selenium Mixed 28 studies
Hair Health
Hair Health
Impact
Highest effect
B Goal FitA- Strength of SupportB CoverageB+ Formula Quality
Zinc · 25 mg

Thyroid Energy 180 Count provides 25 mg L-OptiZinc, 50 mcg selenium, 1 mg copper, 60 mcg methylcobalamin, 680 mcg DFE folate, and 225 mcg iodine, giving it broad deficiency-related hair relevance.

Supplied feedback averages 4.61 stars from 18,376 reviews and NOW reports independently audited GMP systems, while the thyroid-focused formula requires medication and condition review.

Study evidence
Ashwagandha Supportive 2 studies
Copper Adverse 4 studies
Folate Mixed 15 studies
Iodine No effect 1 study
Selenium Disputed 7 studies
Zinc Supportive 22 studies
General Health
General Health
Impact
High effect
B+ Goal FitB Strength of SupportB- CoverageB+ Formula Quality
Folate · 680 mcg DFEVitamin B12 · 60 mcgSelenium · 50 mcgAshwagandha · 50 mgZinc · 25 mg

Thyroid Energy aligns with General Health mainly through Zinc and Ashwagandha, while the supplied collection analyses average 80.9 and supplied customer feedback is 4.61 from 18,376 reviews.

Its strongest feature is form and disclosure quality, while the main limitation is that no supplement replaces a varied diet; it appears better suited to a targeted role within a broader routine.

Study evidence
Ashwagandha Supportive 31 studies
Zinc Supportive 60 studies
Energy
Energy
Impact
High effect
B Goal FitB Strength of SupportB- CoverageB+ Formula Quality
Iodine · 225 mcgVitamin B12 · 60 mcg

Thyroid Energy is reasonably aligned with the Energy goal because its highlighted actives include L-tyrosine at 1 gram, methylcobalamin at 60 mcg, and standardized ashwagandha at 50 mg; evidence quality for the formula as a whole is mixed.

Customer feedback averages 4.61 out of 5 across 18,376 reviews; ashwagandha warrants caution during pregnancy and with thyroid, liver, or interacting-medication concerns.

Study evidence
Ashwagandha Supportive 9 studies
Immunity
Immunity
Impact
High effect
C+ Goal FitB Strength of SupportC CoverageB- Formula Quality
Zinc · 25 mgSelenium · 50 mcg

L-OptiZinc at 25 mg and 50 mcg L-selenomethionine provide direct immune cofactors, while ashwagandha is mainly indirect.

A high-quality zinc form drives most of the immunity fit, while limited pathway coverage keeps the formula from scoring higher.

Study evidence
Selenium Mixed 37 studies
Zinc Supportive 73 studies
Bone Health
Bone Health
Impact
High effect
D+ Goal FitB Strength of SupportB+ CoverageB- Formula Quality
Copper · 1 mgZinc · 25 mg

Thyroid Energy from NOW covers structural mineral support, organic bone-matrix support, mineral transport or remodeling support, producing limited alignment with bone health.

Collection-specific evidence indicates moderate dose adequacy and strong form or disclosure quality, with the main limitation being a primary design aimed at a different goal.

Study evidence
Copper Disputed 20 studies
Zinc Supportive 33 studies

Ingredients

IngredientAmount per serving
Vitamin B6 (Pyridoxine Hydrochloride)
 2 mg
Folate
680 mcg DFE
Vitamin B12 (Methylcobalamin)
 60 mcg
Iodine (Potassium Iodide)
 225 mcg
Zinc (L-OptiZinc)
 25 mg
Selenium (L-Selenomethionine)
 50 mcg
Copper (Copper Amino Acid Chelate)
 1 mg
L-Tyrosine
1 Gram(s)
Guggul standardized extract (Guggulsterones)
 75 mg
Ashwagandha standardized extract (Withanolides)
 50 mg
Gluten Free Adults 18–50 Kosher Dairy Free Women
Report overview
Iodine (Potassium Iodide) · 225 mcg OverallScore100
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Thyroid Energy provides 225 mcg of iodine as potassium iodide, with exact disclosure and a dose inside the preferred daily-maintenance range. At $0.24 per serving, iodine-specific value is strong, while the presence of 50 mcg selenium and 1,000 mg L-tyrosine adds broader formulation context. Customer feedback averages 4.61 across 18,376 reviews; the brand provides clear current labeling and established GMP-oriented manufacturing signals, and anyone using thyroid-related medication should review supplemental iodine with a healthcare professional.

View ingredientView products
Zinc (L-OptiZinc) · 25 mg OverallScore90
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value

NOW Thyroid Energy supplies 25 mg zinc as L-OptiZinc zinc L-methionine, with customer feedback of 4.61 stars from 18,376 reviews. current online labeling confirms GMP production, standard capsule excipients, and explicit zinc and copper forms, and the 25 mg zinc dose remains below the 40 mg upper-intake level and includes 1 mg copper.

View ingredientView products
Copper (Copper Amino Acid Chelate) · 1 mg OverallScore85
A+ Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyA Value

Thyroid Energy clearly provides 1 mg copper as copper amino acid chelate and has a 4.61 average from 18,376 reviews. NOW identifies United States quality testing and GMP production, while the label advises caution with diagnosed thyroid conditions and relevant medications.

View ingredientView products
Loading alternative details
81 Performance

Thyroid Energy

NOW
<p>Meaningful tyrosine, well-specified minerals, and standardized guggul and ashwagandha create a coherent thyroid-support formula. It offers a similarly targeted or complementary approach, but the supplied data do not show a decisive quality advantage over Thyroid Energy; iodine, tyrosine, guggul, and ashwagandha can complicate thyroid conditions or thyroid-medicine management, so affected users should seek individualized guidance.</p>
81 Performance

Ortho Thyroid

Protocol For Life Balance
<p>Meaningful tyrosine, well-specified minerals, and standardized guggul and ashwagandha create a coherent thyroid-support formula. It offers a similarly targeted or complementary approach, but the supplied data do not show a decisive quality advantage over Thyroid Energy; iodine, tyrosine, guggul, and ashwagandha can complicate thyroid conditions or thyroid-medicine management, so affected users should seek individualized guidance.</p>
77 Performance

Essential Thyroid Nutrition

NutriCology
<p>Strong iodine, zinc, selenium, and vitamin B12 forms support a compact thyroid formula, but tyrosine and ashwagandha are modest and botanical standardization is incomplete. It offers a similarly targeted or complementary approach, but the supplied data do not show a decisive quality advantage over Thyroid Energy; the serving cost is reasonable for the targeted design.</p>
78 Budget

Prenatal Multivitamin/Multimineral with Folate

Spring Valley
<p>Folate, iron, iodine, zinc, and key vitamins are supplied at amounts consistent with prenatal use and excellent serving efficiency. The lower recurring cost makes it more economical than Thyroid Energy; most forms are unspecified or basic, and iron may cause nausea or constipation, so the product is better judged by dose coverage than ingredient form quality; the prenatal positioning does not fit routine thyroid support.</p>
83 Budget

Zinc 30 mg

Nature's Life
<p>Zinc picolinate with copper provides a coherent, economical mineral-balance formula. The lower recurring cost makes it more economical than Thyroid Energy; the zinc amount is substantial, and repeated copper entries make the total less clear than it should be; the narrower zinc-and-copper profile does not replace a complete thyroid-support formula.</p>
78 Budget

Zinc Copper Amino Acid Chelate with Kelp & Pumpkin Seed

Solaray
<p>Amino acid chelates and included copper support absorption and mineral balance at excellent serving value. The lower recurring cost makes it more economical than Thyroid Energy; the 50 mg zinc amount exceeds the adult upper intake level and remains poorly balanced against only 2 mg copper; the narrower zinc-and-copper profile does not replace a complete thyroid-support formula.</p>
84 Value

Zinc-Copper Balance

AOR Advanced Orthomolecular Research Premium
<p>A practical zinc amount and well-matched copper use favorable citrate and picolinate forms. The lower recurring cost and stated ingredient strengths create a more favorable quality-to-cost balance than Thyroid Energy; repeated zinc quantities do not show how the total is divided between forms, while full directions and inactive ingredients are missing; the narrower zinc-and-copper profile does not replace a complete thyroid-support formula.</p>
81 Value

Zinc Plus 25 mg

Nature's Answer
<p>Favorable zinc forms and active vitamin B6 support a well-focused formula at a low serving cost. The lower recurring cost and stated ingredient strengths create a more favorable quality-to-cost balance than Thyroid Energy; repeated zinc entries obscure the form split, while the copper amount provides only modest balance against substantial zinc; the narrower zinc-and-copper profile does not replace a complete thyroid-support formula.</p>
79 Value

Ferodrox

Kaged Muscle
<p>Branded ashwagandha, zinc, tongkat ali, shilajit, and piperine create a focused, well-dosed performance formula with strong active disclosure. The supplied serving cost is not lower than Thyroid Energy, so any value advantage depends on prioritizing the stated ingredient strengths; regular use warrants attention to the copper-free zinc amount and possible piperine interactions, while the serving cost remains moderate for the ingredient quality; the fitness and testosterone positioning is not a direct thyroid substitute.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. The Association between Dietary and Circulating Copper Levels and Osteoporosis: a Scoping Review.
    Ju Y; Xiong W; Pang Y; Chen Z; Hou J; Zheng S; Li Z; Liu T; Xia H; Xia M; Zhong Y; Li J; Jiang X · Biological trace element research · 2026
    Scoping review18 studies pooledBone Health forCopper
  2. Association between dietary copper, iron, zinc, selenium intake and osteopenia or osteoporosis in elderly hypertensive patients: a retrospective cohort study.
    Chen M; Jia L; Gao R · Frontiers in nutrition · 2024
    Cohort study5,286 participantsBone Health forCopper
  3. Associations of dietary copper intake with total bone mineral density and lumbar spine bone mineral density in American adults.
    Hu M; Wang Z; Li C; Zheng Y; Hu J · Medicine · 2025
    Cross-sectional studyBone Health forCopper
  4. The association between dietary mineral intake and bone mineral density: a cross-sectional study.
    Wei M; Wei J; Huang S · Journal of health, population, and nutrition · 2025
    Cross-sectional study11,520 participantsBone Health forCopper
  5. Association between dietary copper intake and bone mineral density in children and adolescents aged 8-19 years: A cross-sectional study.
    Cui A; Yan J; Li H; Fan Z; Wei X; Wang H; Zhuang Y · PloS one · 2024
    Cross-sectional study6,965 participantsBone Health forCopper
  6. Increased incidence of fractures in middle-aged and elderly men with low intakes of phosphorus and zinc.
    Elmståhl S; Gullberg B; Janzon L; Johnell O; Elmståhl B · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 1999
    Cohort study6,576 participantsBone Health forZinc
  7. Zinc Supplementation Increases Procollagen Type 1 Amino-Terminal Propeptide in Premenarcheal Girls: A Randomized Controlled Trial.
    Berger PK; Pollock NK; Laing EM; Chertin V; Bernard PJ; Grider A; Shapses SA; Ding KH; Isales CM; Lewis RD · The Journal of nutrition · 2016
    Randomized trial147 participantsBone Health forZinc
  8. Randomized controlled trial of prenatal zinc supplementation and fetal bone growth.
    Merialdi M; Caulfield LE; Zavaleta N; Figueroa A; Costigan KA; Dominici F; Dipietro JA · The American journal of clinical nutrition · 2004
    Randomized trial242 participantsBone Health forZinc
  9. The effects of zinc supplementation on serum zinc, alkaline phosphatase activity and fracture healing of bones.
    Sadighi A; Roshan MM; Moradi A; Ostadrahimi A · Saudi medical journal · 2009
    Randomized trial60 participantsBone Health forZinc
  10. Is Zinc an Important Trace Element on Bone-Related Diseases and Complications? A Meta-analysis and Systematic Review from Serum Level, Dietary Intake, and Supplementation Aspects.
    Ceylan MN; Akdas S; Yazihan N · Biological trace element research · 2021
    Meta-analysis40 studies pooledBone Health forZinc
  11. Effects of multi-herb and ashwagandha root formulas on stress modulation: a randomized, double-blind, placebo-controlled clinical study.
    McKinney E; Stewart J; Kewalramani R; Singh S · Trials · 2026
    Randomized trial186 participantsEnergy forAshwagandha
  12. Efficacy and Safety of Low-Dose Ashwagandha Supplementation on Exercise Endurance: A Randomized, Placebo-Controlled, Double-Blind, Clinical Trial.
    Prajapati H; Satia M; Shah D; Basera I; Shah T · Phytotherapy research : PTR · 2026
    Randomized trialEnergy forAshwagandha
  13. Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.
    Leonard M; Dickerson B; Estes L; Gonzalez DE; Jenkins V; Johnson S; Xing D; Yoo C; Ko J; Purpura M; Jäger R; Faries M; Kephart W; Sowinski R; Rasmussen CJ; Kreider RB · Nutrients · 2024
    Randomized trial59 participantsEnergy forAshwagandha
  14. Enhancing healthspan with Ashwagandha (Withania somnifera): a comprehensive review of its multifaceted geroprotective benefits.
    Vittal M; Vinciguerra M · Biogerontology · 2025
    Narrative reviewEnergy forAshwagandha
  15. Safety and Efficacy of Ashwagandha Root Extract on Cognition, Energy and Mood Problems in Adults: Prospective, Randomized, Placebo-Controlled Study.
    Kale S; Lopresti A; Suri R; Garg N; Langade D · Journal of psychoactive drugs · 2026
    Randomized trial120 participantsEnergy forAshwagandha
  16. A randomized, double blind, placebo controlled study to evaluate the effects of ashwagandha (Withania somnifera) extract on sleep quality in healthy adults.
    Deshpande A; Irani N; Balkrishnan R; Benny IR · Sleep medicine · 2021
    Randomized trial150 participantsGeneral Health forAshwagandha
  17. Effects of Ashwagandha ( Withania somnifera) standardized root extract on physical endurance and VO 2max in healthy adults performing resistance training: An eight-week, prospective, randomized, double-blind, placebo-controlled study.
    Verma N; Gupta SK; Patil S; Tiwari S; Mishra AK · F1000Research · 2024
    Randomized trial80 participantsGeneral Health forAshwagandha
  18. Efficacy of Ashwagandha (Withania somnifera [L.] Dunal) in improving cardiorespiratory endurance in healthy athletic adults.
    Choudhary B; Shetty A; Langade DG · Ayu · 2016
    Randomized trial50 participantsGeneral Health forAshwagandha
  19. Withania somnifera (L.) Dunal as Add-On Therapy for COPD Patients: A Randomized, Placebo-Controlled, Double-Blind Study.
    Singh P; Salman KA; Shameem M; Warsi MS · Frontiers in pharmacology · 2022
    Randomized trial150 participantsGeneral Health forAshwagandha
  20. Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis.
    Cheah KL; Norhayati MN; Husniati Yaacob L; Abdul Rahman R · PloS one · 2021
    Meta-analysis400 participants5 studies pooledGeneral Health forAshwagandha
  21. Effectiveness of sodium bicarbonate and zinc chloride mouthwashes in the treatment of oral mucositis and quality of life in patients with cancer under chemotherapy.
    Mohammadi F; Oshvandi K; Kamallan SR; Khazaei S; Ranjbar H; Ahmadi-Motamayel F; Gillespie M; Jenabi E; Vafaei SY · Nursing open · 2022
    Randomized trial144 participantsGeneral Health forZinc
  22. Zinc supplementation in young children with acute diarrhea in India.
    Sazawal S; Black RE; Bhan MK; Bhandari N; Sinha A; Jalla S · The New England journal of medicine · 1995
    Randomized trial937 participantsGeneral Health forZinc
  23. Associations of mortality with ocular disorders and an intervention of high-dose antioxidants and zinc in the Age-Related Eye Disease Study: AREDS Report No. 13.
    Clemons TE; Kurinij N; Sperduto RD; AREDS Research Group · Archives of ophthalmology (Chicago, Ill. : 1960) · 2004
    Randomized trial4,753 participantsGeneral Health forZinc
  24. Effects of zinc and probiotic co-supplementation on inflammation, gastrointestinal symptoms, quality of life, and mood in irritable bowel syndrome patients.
    Rezazadegan M; Soheilipour M; Amani R · Scientific reports · 2026
    Randomized trial84 participantsGeneral Health forZinc
  25. Effect of zinc sulfate supplementation on premenstrual syndrome and health-related quality of life: Clinical randomized controlled trial.
    Siahbazi S; Behboudi-Gandevani S; Moghaddam-Banaem L; Montazeri A · The journal of obstetrics and gynaecology research · 2018
    Randomized trial142 participantsGeneral Health forZinc
  26. Effects of Withania somnifera root extract serum application on hair health in healthy adults: A prospective, double-blind, randomized, parallel, placebo-controlled study.
    Yerram C; Jillella A; Reddy V · Journal of Ayurveda and integrative medicine · 2023
    Randomized trial61 participantsHair Health forAshwagandha
  27. A Prospective, Randomized, Double-Blind, Placebo-Controlled Clinical Study of Efficacy and Safety of Ashwagandha Root Extract Capsule on Skin and Hair Health in Healthy Adults.
    Jillella A; Keerthi N; Venkateswar Reddy J · Phytotherapy research : PTR · 2026
    Randomized trialHair Health forAshwagandha
  28. Menkes disease and response to copper histidine: An Indian case series.
    Yoganathan S; Sudhakar SV; Arunachal G; Thomas M; Subramanian A; George R; Danda S · Annals of Indian Academy of Neurology · 2022
    Case series4 participantsHair Health forCopper
  29. Trace element levels in alopecia areata.
    Bhat YJ; Manzoor S; Khan AR; Qayoom S · Indian journal of dermatology, venereology and leprology · 2009
    Case-control study100 participantsHair Health forCopper
  30. UV damage to hair and the effect of antioxidants and metal chelators.
    Millington KR; Marsh JM · International journal of cosmetic science · 2021
    In vitro / ex vivo studyHair Health forCopper
  31. Preserving fibre health: reducing oxidative stress throughout the life of the hair fibre.
    Marsh JM; Davis MG; Lucas RL; Reilman R; Styczynski PB; Li C; Mamak M; McComb DW; Williams RE; Godfrey S; Navqi KR; Chechik V · International journal of cosmetic science · 2016
    In vitro / ex vivo studyHair Health forCopper
  32. Hair Loss After Metabolic and Bariatric Surgery: a Systematic Review and Meta-analysis.
    Zhang W; Fan M; Wang C; Mahawar K; Parmar C; Chen W; Yang W; Global Bariatric Research Collaborative · Obesity surgery · 2021
    Meta-analysis2,538 participants18 studies pooledHair Health forFolate
  33. Quantitative Analysis of Selected Circulating Hematological Biomarkers, Essential Minerals, Vitamins, and Thyroid Hormones in Females Affected by Hair Loss.
    Al-Fawaeir S; Al-Odat I · Diseases (Basel, Switzerland) · 2025
    Case-control study200 participantsHair Health forFolate
  34. Twelve weeks of protracted venous infusion of fluorouracil (5-FU) is as effective as 6 months of bolus 5-FU and folinic acid as adjuvant treatment in colorectal cancer.
    Saini A; Norman AR; Cunningham D; Chau I; Hill M; Tait D; Hickish T; Iveson T; Lofts F; Jodrell D; Ross PJ; Oates J · British journal of cancer · 2003
    Randomized trialHair Health forFolate
  35. Role of oxaliplatin combined with 5-fluorouracil and folinic acid in the first- and second-line treatment of advanced colorectal cancer.
    Jonker D; Rumble RB; Maroun J; Gastrointestinal Cancer Disease Site Groupof Cancer Care Ontario’s Program in Evidence-Based Care · Current oncology (Toronto, Ont.) · 2012
    Randomized trialHair Health forFolate
  36. Phase I-II study of vinorelbine in combination with 5-fluorouracil and folinic acid as first-line chemotherapy in metastatic breast cancer: a regimen with a low subjective toxic burden.
    Nolè F; de Braud F; Aapro M; Minchella I; De Pas TM; Zampino MG; Monti S; Andreoni G; Goldhirsch A · Annals of oncology : official journal of the European Society for Medical Oncology · 1997
    Randomized trialHair Health forFolate
  37. [Evaluation of the role of dietary intake in the occurrence of alopecia].
    El Fékih N; Kamoun H; Fazaa B; El Ati J; Zouari B; Kamoun MR; Gaigi S · Revue medicale de Liege · 2010
    Case-control study272 participantsHair Health forIodine
  38. Beyond Efficacy: 0.6% Selenium Disulfide Shampoo Matches 2% Ketoconazole for Seborrheic Dermatitis with Superior Cosmesis.
    Farris PK; Barbosa V; Houshman EB; Kovylkina N · Journal of drugs in dermatology : JDD · 2026
    Randomized trial87 participantsHair Health forSelenium
  39. Selenium Disulfide-based shampoo applied for 4 weeks significantly improves dandruff and seborrheic dermatitis.
    Turcu G; Artenie C; Nowicka D; Arenbergerová M; Lazaridou E; Khobzei K; Ataseven A; Part M; Leclerc-Mercier S · European journal of dermatology : EJD · 2023
    Observational study1,407 participantsHair Health forSelenium
  40. A Comparative Randomized Clinical Study Assessing the Efficacy of a 1% Selenium Disulfide-Based Shampoo versus 2% Ketoconazole Shampoo in Subjects with Moderate to Severe Scalp Seborrheic Dermatitis.
    Barbosa V; Melo DF; Vañó-Galván S; Lutchmanen-Kolanthan V; Sant'Anna B; Leclerc-Mercier S; Reygagne P · Skin appendage disorders · 2025
    Randomized trial64 participantsHair Health forSelenium
  41. Changes of serum trace elements level in patients with alopecia areata: A meta-analysis.
    Jin W; Zheng H; Shan B; Wu Y · The Journal of dermatology · 2018
    Meta-analysis764 participantsHair Health forSelenium
  42. Scientific opinion on the tolerable upper intake level for selenium.
    EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA); Turck D; Bohn T; Castenmiller J; de Henauw S; Hirsch-Ernst KI; Knutsen HK; Maciuk A; Mangelsdorf I; McArdle HJ; Peláez C; Pentieva K; Siani A; Thies F; Tsabouri S; Vinceti M; Aggett P; Crous Bou M; Cubadda F; Ciccolallo L; de Sesmaisons Lecarré A; Fabiani L; Titz A; Naska A · EFSA journal. European Food Safety Authority · 2023
    Systematic reviewHair Health forSelenium
  43. The effects of minoxidil, 1% pyrithione zinc and a combination of both on hair density: a randomized controlled trial.
    Berger RS; Fu JL; Smiles KA; Turner CB; Schnell BM; Werchowski KM; Lammers KM · The British journal of dermatology · 2003
    Randomized trial200 participantsHair Health forZinc
  44. Incubatory environment of the scalp impacts pre-emergent hair to affect post-emergent hair cuticle integrity.
    Schwartz JR; Henry JP; Kerr KM; Flagler MJ; Page SH; Redman-Furey N · Journal of cosmetic dermatology · 2018
    Randomized trialHair Health forZinc
  45. A comparison of hair quality and cosmetic acceptance following the use of two anti-dandruff shampoos.
    Draelos ZD; Kenneally DC; Hodges LT; Billhimer W; Copas M; Margraf C · The journal of investigative dermatology. Symposium proceedings · 2006
    Randomized trial40 participantsHair Health forZinc
  46. BMI and levels of zinc, copper in hair, serum and urine of Turkish male patients with androgenetic alopecia.
    Ozturk P; Kurutas E; Ataseven A; Dokur N; Gumusalan Y; Gorur A; Tamer L; Inaloz S · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2015
    Case-control study216 participantsHair Health forZinc
  47. Analysis of serum zinc and copper concentrations in hair loss.
    Kil MS; Kim CW; Kim SS · Annals of dermatology · 2013
    Case-control study342 participantsHair Health forZinc
  48. Effects of selenium supplementation on selenoprotein gene expression and response to influenza vaccine challenge: a randomised controlled trial.
    Goldson AJ; Fairweather-Tait SJ; Armah CN; Bao Y; Broadley MR; Dainty JR; Furniss C; Hart DJ; Teucher B; Hurst R · PloS one · 2011
    Randomized trial119 participantsImmunity forSelenium
  49. Effect of selenium on immune response against hepatitis B vaccine with accelerated method in insulin-dependent diabetes mellitus patients.
    Janbakhsh A; Mansouri F; Vaziri S; Sayad B; Afsharian M; Rahimi M; Shahebrahimi K; Salari F · Caspian journal of internal medicine · 2013
    Randomized trial62 participantsImmunity forSelenium
  50. Chemoprevention trial of human hepatitis with selenium supplementation in China.
    Yu SY; Li WG; Zhu YJ; Yu WP; Hou C · Biological trace element research · 1990
    Non-randomized trial20,847 participantsImmunity forSelenium
  51. Selenium nanoparticles as adjunctive therapy in sepsis: A pilot randomized clinical trial.
    Gu WJ; Huang W; Zhao FZ; Yuan XK; Jin K; Chen JL; Zhang CY; Huang Y; He L; Zhuang H; Yin HY; Chen T · Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy · 2026
    Randomized trial70 participantsImmunity forSelenium
  52. Selenium supplementation in patients with autoimmune thyroiditis decreases thyroid peroxidase antibodies concentrations.
    Gärtner R; Gasnier BC; Dietrich JW; Krebs B; Angstwurm MW · The Journal of clinical endocrinology and metabolism · 2002
    Randomized trial70 participantsImmunity forSelenium
  53. Nutrient supplementation for prevention of viral respiratory tract infections in healthy subjects: A systematic review and meta-analysis.
    Vlieg-Boerstra B; de Jong N; Meyer R; Agostoni C; De Cosmi V; Grimshaw K; Milani GP; Muraro A; Oude Elberink H; Pali-Schöll I; Roduit C; Sasaki M; Skypala I; Sokolowska M; van Splunter M; Untersmayr E; Venter C; O'Mahony L; Nwaru BI · Allergy · 2022
    Meta-analysis199,055 participants115 studies pooledImmunity forZinc
  54. Zinc supplementation reduces the incidence of acute lower respiratory infections in infants and preschool children: a double-blind, controlled trial.
    Sazawal S; Black RE; Jalla S; Mazumdar S; Sinha A; Bhan MK · Pediatrics · 1998
    Randomized trial609 participantsImmunity forZinc
  55. A randomized controlled trial of zinc supplementation in the treatment of acute respiratory tract infection in Thai children.
    Rerksuppaphol S; Rerksuppaphol L · Pediatric reports · 2020
    Randomized trial64 participantsImmunity forZinc
  56. The effect of zinc and vitamin A supplementation on immune response in an older population.
    Fortes C; Forastiere F; Agabiti N; Fano V; Pacifici R; Virgili F; Piras G; Guidi L; Bartoloni C; Tricerri A; Zuccaro P; Ebrahim S; Perucci CA · Journal of the American Geriatrics Society · 1998
    Randomized trial136 participantsImmunity forZinc
  57. The role of specific nutrients in preventing immune system and blood cell disorders: an umbrella review.
    Vecchietti A; Strano P; Minutolo G; Grieco V; Cappuccio G; Granvillano G; Confalonieri L; Briganti GL; Raso E; Chimienti M; Pellegrini M; Mercogliano M; Spatari G; Lugli C; Urbano T; Lorenzon A · Journal of preventive medicine and hygiene · 2026
    Systematic review13 studies pooledImmunity forZinc
  58. Iodine Supplementation Decreases Hypercholesterolemia in Iodine-Deficient, Overweight Women: A Randomized Controlled Trial.
    Herter-Aeberli I; Cherkaoui M; El Ansari N; Rohner R; Stinca S; Chabaa L; von Eckardstein A; Aboussad A; Zimmermann MB · The Journal of nutrition · 2015
    Randomized trial163 participantsMetabolism Boost forIodine
  59. Effect of oral iodized oil on thyroid size and thyroid hormone metabolism in children with concurrent selenium and iodine deficiency.
    Zimmermann MB; Adou P; Torresani T; Zeder C; Hurrell RF · European journal of clinical nutrition · 2000
    Single-arm trial51 participantsMetabolism Boost forIodine
  60. Serum Iodine Concentration as a Biomarker for Individual Iodine Nutrition and Thyroid Function in Pregnant Women: A Cross-Sectional Study in Hubei Province.
    Xu M; Dai X; Wang Z; Guo C; Zhang B; Guo H · Public health nutrition · 2026
    Cross-sectional study1,197 participantsMetabolism Boost forIodine
  61. Iron status influences the efficacy of iodine prophylaxis in goitrous children in Côte d'Ivoire.
    Zimmermann MB · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2002
    OtherMetabolism Boost forIodine
  62. Persistence of goiter despite oral iodine supplementation in goitrous children with iron deficiency anemia in Côte d'Ivoire.
    Zimmermann M; Adou P; Torresani T; Zeder C; Hurrell R · The American journal of clinical nutrition · 2000
    Non-randomized trial109 participantsMetabolism Boost forIodine
  63. Effects of selenium supplementation on glucose homeostasis, inflammation, and oxidative stress in gestational diabetes: Randomized, double-blind, placebo-controlled trial.
    Asemi Z; Jamilian M; Mesdaghinia E; Esmaillzadeh A · Nutrition (Burbank, Los Angeles County, Calif.) · 2016
    Randomized trial70 participantsMetabolism Boost forSelenium
  64. Metabolic response to selenium supplementation in women with polycystic ovary syndrome: a randomized, double-blind, placebo-controlled trial.
    Jamilian M; Razavi M; Fakhrie Kashan Z; Ghandi Y; Bagherian T; Asemi Z · Clinical endocrinology · 2016
    Randomized trial70 participantsMetabolism Boost forSelenium
  65. Comparison of nutritional supplements in improving glycolipid metabolism and endocrine function in polycystic ovary syndrome: a systematic review and network meta-analysis.
    Hu X; Wang W; Su X; Peng H; Tan Z; Li Y; Huang Y · PeerJ · 2023
    Meta-analysis2,362 participants41 studies pooledMetabolism Boost forSelenium
  66. The Effects of Selenium Supplementation on Gene Expression Related to Insulin and Lipid Metabolism, and Pregnancy Outcomes in Patients with Gestational Diabetes Mellitus: a Randomized, Double-Blind, Placebo-Controlled Trial.
    Karamali M; Dastyar F; Badakhsh MH; Aghadavood E; Amirani E; Asemi Z · Biological trace element research · 2021
    Randomized trial36 participantsMetabolism Boost forSelenium
  67. Glycemic and lipid responses to selenium-enriched vs. zeaxanthin-enriched eggs in patients with type 2 diabetes: a 12-week randomized controlled trial.
    Niu X; Zhang Y; Liu Y; Zhu Y; Fang B; Hu C; Xu X; Wang R; Sang Y; Zhang Q; Guo J · Frontiers in nutrition · 2026
    Randomized trial58 participantsMetabolism Boost forSelenium
  68. Noninferiority of Copper Dressings Than Negative Pressure Wound Therapy in Healing Diabetic Wounds: A Randomized Clinical Trial.
    Melamed E; Dabbah J; Israel T; Kan I; Pinzur MS; Roth T; Borkow G · Advances in wound care · 2026
    Randomized trialSkin Health forCopper
  69. Improvement of facial skin characteristics using copper oxide containing pillowcases: a double-blind, placebo-controlled, parallel, randomized study.
    Borkow G; Gabbay J; Lyakhovitsky A; Huszar M · International journal of cosmetic science · 2010
    Randomized trial57 participantsSkin Health forCopper
  70. Radially Electrospun Fibrous Membrane Incorporated with Copper Peroxide Nanodots Capable of Self-Catalyzed Chemodynamic Therapy for Angiogenesis and Healing Acceleration of Diabetic Wounds.
    Huang Y; Qi L; Liu Z; Jiang Y; Wang J; Liu L; Li Y; Zhang L; Feng G · ACS applied materials & interfaces · 2023
    Animal experimentSkin Health forCopper
  71. Engineering copper nanoparticle/polysaccharide-immobilized cotton gauze for accelerated healing of Staphylococcus aureus-infected dermal wounds.
    Sahoo M; Banerjee T; Virkar S; Das S; Biswas S; Mitra D · Journal of materials chemistry. B · 2026
    Animal experimentSkin Health forCopper
  72. Stimulation of Healing of Non-Infected Stagnated Diabetic Wounds by Copper Oxide-Impregnated Wound Dressings.
    Melamed E; Rovitsky A; Roth T; Assa L; Borkow G · Medicina (Kaunas, Lithuania) · 2021
    Single-arm trialSkin Health forCopper
  73. Sex-related differences in response to zinc pyrithione shampoo vs. non-anti-dandruff shampoo.
    Collins LZ; Baines FL; Matheson JR; Turner GA; Diao Y; Li Y; Pi Y · International journal of cosmetic science · 2019
    Meta-analysis2,088 participants20 studies pooledSkin Health forZinc
  74. Maintenance of an Acidic Skin Surface with a Novel Zinc Lactobionate Emollient Preparation Improves Skin Barrier Function in Patients with Atopic Dermatitis.
    Andrew PV; Pinnock A; Poyner A; Brown K; Chittock J; Kay LJ; Cork MJ; Danby SG · Dermatology and therapy · 2024
    Cohort study23 participantsSkin Health forZinc
  75. Spatial expression of metallothionein, matrix metalloproteinase-1 and Ki-67 in human epidermal wounds treated with zinc and determined by quantitative immunohistochemistry: A randomised double-blind trial.
    Ågren MS; Chafranska L; Eriksen JO; Forman JL; Bjerrum MJ; Schjerling P; Larsen HF; Cottarelli E; Jorgensen LN; Gjerdrum LMR · European journal of cell biology · 2021
    Randomized trial30 participantsSkin Health forZinc
  76. A pilot trial using topical regular crystalline insulin vs. aqueous zinc solution for uncomplicated cutaneous wound healing: Impact on quality of life.
    Attia EA; Belal DM; El Samahy MH; El Hamamsy MH · Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society · 2014
    Randomized trial90 participantsSkin Health forZinc
  77. Evidence-Based Nutritional Interventions in Wound Care.
    Saeg F; Orazi R; Bowers GM; Janis JE · Plastic and reconstructive surgery · 2021
    Systematic review2,339 participants36 studies pooledSkin Health forZinc
  78. Effects of Withania somnifera (L.) Dunal (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.
    Zhu X; Zeng Q; Lei Y; Xu D · Frontiers in pharmacology · 2026
    Meta-analysis1,249 participants20 studies pooledTestosterone Support forAshwagandha
  79. Effect of standardized root extract of ashwagandha (Withania somnifera) on well-being and sexual performance in adult males: A randomized controlled trial.
    Chauhan S; Srivastava MK; Pathak AK · Health science reports · 2024
    Randomized trial50 participantsTestosterone Support forAshwagandha
  80. Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review.
    Smith SJ; Lopresti AL; Teo SYM; Fairchild TJ · Advances in nutrition (Bethesda, Md.) · 2021
    Systematic review32 studies pooledTestosterone Support forAshwagandha
  81. Do "testosterone boosters" really increase serum total testosterone? A systematic review.
    Morgado A; Tsampoukas G; Sokolakis I; Schoentgen N; Urkmez A; Sarikaya S · International journal of impotence research · 2024
    Systematic review3 studies pooledTestosterone Support forAshwagandha
  82. Safety and Tolerability of Withania somnifera Root Extract in Healthy Male Participants: A Pilot Randomized, Double-Blind, Placebo-Controlled Clinical Trial.
    Vaidya N; Agarwal R; Kshirsagar P; Ganu G; Nagore D; Mehta A; Vora A; Nair S · Food science & nutrition · 2025
    Randomized trial40 participantsTestosterone Support forAshwagandha
  83. Environmental exposure to metals and male reproductive hormones: circulating testosterone is inversely associated with blood molybdenum.
    Meeker JD; Rossano MG; Protas B; Padmanahban V; Diamond MP; Puscheck E; Daly D; Paneth N; Wirth JJ · Fertility and sterility · 2010
    Cross-sectional study219 participantsTestosterone Support forZinc
  84. Nonpharmacological Interventions for the Management of Testosterone and Sperm Parameters: A Scoping Review.
    Santos HO; Cadegiani FA; Forbes SC · Clinical therapeutics · 2022
    Scoping reviewTestosterone Support forZinc
  85. Zinc is an Essential Element for Male Fertility: A Review of Zn Roles in Men's Health, Germination, Sperm Quality, and Fertilization.
    Fallah A; Mohammad-Hasani A; Colagar AH · Journal of reproduction & infertility · 2020
    Narrative reviewTestosterone Support forZinc
  86. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  87. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc