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Zinc

4.8
★ ★ ★ ★ ★
(375 ratings)
Zinc 50 mg
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Score79
A convenient and economical zinc citrate capsule whose 50 mg dose sharply limits long-term suitability.
How scoring works
Capsule
Quantity:90 Capsule(s) • (90 servings)
Goals:
Vision Support
General Health
Testosterone Support
Immunity
Hair Health

Score 79

A convenient and economical zinc citrate capsule whose 50 mg dose sharply limits long-term suitability.
How scoring works
$16.22($0.18 per serving)
Vitacost
$ 16.53
iHerb
$ 16.22
Pure Formulas
$ 16.22
Amazon
$ 16.22
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Analysis

The formula provides zinc citrate in a simple one-capsule format. Its organic salt form has good absorption potential and the active quantity is easy to understand.

The 50 mg serving is excessive for ordinary daily maintenance. Continued use without copper can reduce copper absorption and may also cause nausea.

Low cost and a long supply are useful only when the dose fits the user's plan. A lower-dose product is a better default for regular unsupervised supplementation.

Who is it for
  • Adults with a specific high-dose need
  • Capsule users
  • People monitoring copper status
Best for
  • Short-duration zinc use
  • Focused single-mineral supplementation
  • Users who value zinc citrate

Pros

  • Good citrate form
  • Clear one-capsule dosing
  • Favorable value

Cons

  • Dose exceeds the usual upper limit
  • No copper balance
  • Poor fit for long-term daily use

Warnings

  • Regular 50 mg intake may cause nausea and reduce copper absorption over time.

Nutrient quality

73 High impact

A well-absorbed citrate form and ample zinc support zinc-related uses. The excessive amount and absent copper balance make routine long-term use a poor fit.

Ingredient transparency

84 Highest impact

The elemental amount and citrate form are fully disclosed with no hidden blend. Inactive ingredients and complete intake directions are not supplied.

Customer satisfaction

69 High impact

Aggregate customer metrics indicate strong satisfaction from a moderate sample. Missing feedback details prevent judging repeated complaints or whether experiences match the intended use.

Value for money

87 Highest impact

A low serving cost and absorbable form create strong apparent value. Excessive dosing lowers quality-adjusted value for routine use.

Report analysis

Goals

Vision Support
Vision Support
Impact
Highest effect
B+ Goal FitA+ Strength of SupportC- CoverageA+ Formula Quality
Zinc · 50 mg

Natural astaxanthin provides targeted retinal antioxidant support and may help eye strain linked to prolonged screen use. Human evidence is promising for visual fatigue but less comprehensive than multi-nutrient macular formulas.

The algae source and substantial amount are clearly disclosed in a fat-containing softgel. The focused formula offers strong antioxidant depth but does not cover macular pigments, minerals, or omega fatty acids.

General Health
General Health
Impact
High effect
A- Goal FitB- Strength of SupportD CoverageA Formula Quality
Zinc · 50 mg

Zinc citrate provides a foundational mineral in a well-absorbed form. Its immune, antioxidant, and enzyme roles align with daily health when zinc intake is inadequate.

The single active is clearly disclosed, but the amount is too high for routine unsupervised use. A 50 mg daily zinc dose exceeds the usual adult upper limit and can cause nausea or copper deficiency with continued use.

Study evidence
Zinc Supportive 60 studies
Testosterone Support
Testosterone Support
Impact
High effect
B Goal FitB+ Strength of SupportD CoverageA Formula Quality
Zinc · 50 mg

Zinc citrate directly supports steroidogenesis and may help when zinc status is low. The amount is higher than needed for routine daily support and does not reliably boost testosterone in zinc-replete users.

The single-ingredient capsule is focused and clearly labeled. The zinc dose exceeds the usual adult daily upper limit and can cause nausea or copper deficiency with continued use.

Study evidence
Zinc Disputed 7 studies
Immunity
Immunity
Impact
High effect
A Goal FitC Strength of SupportD+ CoverageB Formula Quality
Zinc · 50 mg

Zinc supports foundational immune, enzyme, antioxidant, and tissue-repair functions. The formula focuses mainly on zinc-dependent pathways, with limited added mineral breadth.

The 50 mg zinc amount exceeds the adult tolerable upper intake level and is poorly suited to routine long-term use. A daily 50 mg zinc amount exceeds the adult upper limit and may cause nausea or copper deficiency with extended use.

Study evidence
Zinc Supportive 73 studies
Hair Health
Hair Health
Impact
High effect
B- Goal FitC+ Strength of SupportF CoverageA+ Formula Quality
Zinc · 50 mg

Zinc at 50 mg can correct deficiency-related shedding and supports follicle cell division and protein synthesis. Extra zinc is unlikely to improve hair when status is adequate.

The amount is substantial and the chemical form is clearly disclosed. The 50 mg amount exceeds the adult upper intake level and can cause nausea or copper deficiency with continued use.

Study evidence
Zinc Supportive 22 studies

Ingredients

IngredientAmount per serving
Zinc (Zinc Citrate)
 50 mg
Gluten Free Adults 18–50 Kosher Dairy Free Vegetarian
Report overview
Zinc (Zinc Citrate) · 50 mg OverallScore70
B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyB+ Value

Zinc citrate is a well-absorbed organic salt, and the exact 50 mg amount is clearly disclosed. The dose exceeds the usual daily upper limit and lacks balancing copper, making it less suitable for unsupervised long-term use. A single capsule and favorable serving economics remain practical strengths.

View ingredientView products
Loading alternative details
87 Performance

Zinc Picolinate 22 mg

Solgar
The focused 22 mg zinc picolinate formula offers strong absorption and a more practical maintenance amount than the original's aggressive 50 mg zinc amount. Its clear single-active label also removes the uncertainty created by unnecessary or opaque additions.
87 Performance

Zinc Picolinate 25 mg

Thompson
A clearly disclosed 25 mg zinc picolinate dose is easier to use routinely than the original's aggressive 50 mg zinc amount. The simple formula combines favorable absorption with an amount below the usual adult upper limit.
86 Performance

L-OptiZinc 30 mg

NOW
L-OptiZinc monomethionine provides a specific, well-absorbed form that improves on the original's aggressive 50 mg zinc amount. The small copper addition offers some balance, although it may not fully offset sustained intake of 30 mg zinc.
84 Budget

Zinc Gluconate 30 mg

Swanson
Its lower recurring cost improves the value comparison, while 30 mg zinc gluconate reduces the dosing concern compared with the original's aggressive 50 mg zinc amount. The form and amount are clearly stated, though sustained use still calls for attention to copper intake.
85 Budget

Zinc 30 mg

Nature Made
Its lower recurring cost improves the value comparison, and the focused 30 mg zinc gluconate tablet avoids the extra or opaque ingredients in the original's aggressive 50 mg zinc amount. The amount remains substantial without reaching the common 50 mg excess seen in many originals.
85 Budget

Zinc Chelate 30 mg

Nature's Way
Its lower recurring cost improves the value comparison, while 30 mg zinc bisglycinate provides a well-absorbed chelate with a simpler profile than the original's aggressive 50 mg zinc amount. No copper is included, so prolonged daily use still deserves caution.
85 Value

Chelated Zinc 30 mg

Swanson
TRAACS zinc glycinate supplies a specific 30 mg chelate with strong absorption potential, giving better quality for the cost than the original's aggressive 50 mg zinc amount. The capsule stays focused and economical, although it does not include copper.
86 Value

Chelated Zinc 30 mg

Carlson
A 30 mg zinc glycinate chelate combines favorable absorption and digestive tolerance with strong serving value compared with the original's aggressive 50 mg zinc amount. The long supply supports economical use, but ongoing intake may still reduce copper status.
83 Value

Zinc 30 mg

Nature's Life
Zinc picolinate plus copper offers a more complete mineral-balance approach for the cost than the original's aggressive 50 mg zinc amount. The copper addition is useful, although repeated copper entries make the exact total less clear than it should be.
Report alternatives

Sources

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

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  20. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc