Product Image

Zinc 50 mg

NOW
4.7
★ ★ ★ ★ ★
(94059 ratings)
Zinc 50 mg
Product Image
Score71
A very low price is not enough to compensate for an unspecified zinc form and an excessive 50 mg serving. The lack of copper further weakens its fit for regular use.
How scoring works
Quantity:100 Tablet(s) • (100 servings)
Goals:
General Health

Score 71

A very low price is not enough to compensate for an unspecified zinc form and an excessive 50 mg serving. The lack of copper further weakens its fit for regular use.
How scoring works
$3.50($0.03 per serving)
iHerb
$ 5.50
Daily Vita
$ 4.76
Vitacost
$ 5.23
Amazon
$ 4.64
Daily Vita
$ 3.50
Report prices

Analysis

The formula provides only zinc, which makes its purpose easy to understand. However, the missing chemical form prevents a useful assessment of absorption and digestive tolerance.

The 50 mg amount is excessive for ordinary daily maintenance. Zinc can support normal functions when intake is low, but this narrow product does not provide the complementary nutrients needed for broad immune, skin, hair, vision, or hormone support.

Very low cost is the main practical advantage. An unspecified form and a high amount without copper make a lower-dose, better-disclosed alternative the more sensible choice for most users.

Who is it for
  • Adults who have been told to use high-dose zinc briefly
  • Users whose main concern is very low cost
  • People willing to verify the zinc source on the physical label
Best for
  • Low-cost short-term zinc use
  • A simple single-mineral tablet
  • Users with professional dose guidance

Pros

  • Clearly lists the elemental zinc amount
  • Uses a simple one-ingredient active formula
  • Provides many servings
  • Has very low serving cost

Cons

  • Does not identify the zinc compound
  • Exceeds the usual adult upper intake level
  • Contains no copper
  • Offers no complementary nutrient coverage

Warnings

  • The 50 mg serving may cause nausea, stomach pain, or vomiting.
  • Prolonged daily use may impair copper absorption because no copper is included.
  • Zinc can reduce absorption of tetracycline or quinolone antibiotics and penicillamine; use the prescribed spacing interval.

Nutrient quality

52 Moderate impact

The zinc compound is not identified, so absorption and tolerance cannot be assessed. The unknown form limits confidence, while the excessive amount creates copper-depletion and stomach-upset concerns.

Ingredient transparency

76 High impact

The elemental zinc amount is stated clearly. No proprietary blend hides the listed active doses.

Customer satisfaction

72 High impact

The supplied average is strong, with very large response volume. Complaint patterns and purpose-related experiences are not supplied.

Value for money

86 Highest impact

The asking price is only partly justified by the disclosed formula. Each serving offers very good practical value for its useful active dose.

Report analysis

Goals

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

Zinc provides foundational support for immune readiness, enzyme function, and normal tissue maintenance. The serving amount exceeds the adult daily upper intake level, reducing suitability for routine long-term use.

No copper is included to protect mineral balance, and prolonged use may contribute to copper depletion or nausea. The focused design offers strong zinc depth but little broader pathway coverage.

Study evidence
Zinc Supportive 60 studies
Immunity
Immunity
Impact
Moderate effect
A Goal FitD Strength of SupportD- CoverageB- Formula Quality
Zinc · 50 mg

Zinc directly supports immune cell development and communication, and the disclosed amount is physiologically substantial. The formula is narrowly focused rather than broad.

The amount exceeds the adult daily upper intake level and is not well suited to long-term unsupervised use. Regular high intake without copper can contribute to copper depletion, making shorter-term or clinician-directed use more appropriate.

Study evidence
Zinc Supportive 73 studies
Hair Health
Hair Health
Impact
Moderate effect
C+ Goal FitD- Strength of SupportF CoverageA Formula Quality
Zinc · 50 mg

Zinc can support hair recovery when zinc deficiency contributes to shedding. It offers no dependable extra growth benefit when zinc status is already adequate.

The 50 mg amount uses an unspecified zinc compound but is too high for routine long-term use. Daily use at this level may cause nausea and reduce copper status over time.

Study evidence
Zinc Supportive 22 studies
Testosterone Support
Testosterone Support
Impact
Moderate effect
B- Goal FitF Strength of SupportD- CoverageA Formula Quality
Zinc · 50 mg

Zinc is essential for testosterone synthesis, but the 50 mg serving exceeds the adult upper intake level for routine daily use. Benefits are most plausible when zinc status is low, not as a general testosterone boost.

The chemical form is not disclosed, leaving absorption and tolerance uncertain. The lack of copper raises a meaningful risk of copper depletion with prolonged use.

Study evidence
Zinc Disputed 7 studies
Vision Support
Vision Support
Impact
Moderate effect
B- Goal FitD- Strength of SupportD- CoverageB- Formula Quality
Zinc · 50 mg

Zinc supports retinal vitamin A handling and antioxidant enzymes, but a standalone mineral cannot provide broad vision support. The specific zinc compound is not disclosed.

The 50 mg amount exceeds the usual adult upper limit and the formula contains no copper. Long-term use may cause nausea and copper depletion, so routine unsupervised use is not appropriate.

Study evidence
Zinc Supportive 39 studies

Ingredients

IngredientAmount per serving
Zinc
50 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Women Vegetarian
Report overview
Zinc · 50 mg OverallScore43
F Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyA+ Value

The 50 mg amount is high enough to exceed the adult upper limit, and no copper is included. The specific zinc compound is not disclosed, leaving absorption and tolerance uncertain. Cost is exceptionally low, but the unclear form and long-term copper-depletion risk outweigh much of that appeal.

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 recurring cost remains among the lowest in the provided options, 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 recurring cost remains among the lowest in the provided options, 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. 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
  2. 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
  3. Zinc for infection prevention in children with sickle cell anemia: a randomized double-blind placebo-controlled trial.
    Namazzi R; Opoka R; Conroy AL; Datta D; Tagoola A; Bond C; Goings MJ; Ryu MS; Cusick SE; Krebs NF; Jang JH; Tu W; Ware RE; John CC · Blood advances · 2023
    Randomized trial252 participantsImmunity forZinc
  4. Effects of Zinc Supplementation on Inflammatory Skin Diseases: A Systematic Review of the Clinical Evidence.
    Dhaliwal S; Nguyen M; Vaughn AR; Notay M; Chambers CJ; Sivamani RK · American journal of clinical dermatology · 2020
    Systematic review22 studies pooledSkin Health forZinc
  5. 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
  6. 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
  7. 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
  8. Hair Loss and Zinc Deficiency: A Cross-Sectional Study.
    Liran O; Vered S; Cohen B; Shapiro Ben David S; Nakhleh A; Rahamim-Cohen D; Azuri J; Adler L · Healthcare (Basel, Switzerland) · 2025
    Cross-sectional study23,975 participantsHair Health forZinc
  9. Role of zinc in chronic telogen effluvium in serum and hair of patients with alopecia.
    Zufishan S; Haque Z; Nazar S; Afaq E; Aamir E; Rafique S · JPMA. The Journal of the Pakistan Medical Association · 2024
    Case-control study100 participantsHair Health forZinc
  10. Antioxidant vitamin and mineral supplements for slowing the progression of age-related macular degeneration.
    Evans JR; Lawrenson JG · The Cochrane database of systematic reviews · 2023
    Meta-analysis3,790 participants5 studies pooledVision Support forZinc
  11. Oral zinc in macular degeneration.
    Newsome DA; Swartz M; Leone NC; Elston RC; Miller E · Archives of ophthalmology (Chicago, Ill. : 1960) · 1988
    Randomized trial151 participantsVision Support forZinc
  12. Treatment response to antioxidants and zinc based on CFH and ARMS2 genetic risk allele number in the Age-Related Eye Disease Study.
    Awh CC; Hawken S; Zanke BW · Ophthalmology · 2015
    Randomized trial989 participantsVision Support forZinc
  13. 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
  14. 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
  15. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  30. Antioxidant vitamin and mineral supplements for age-related macular degeneration.
    Evans JR · The Cochrane database of systematic reviews · 2002
    Systematic review170 participants7 studies pooledVision Support forZinc
  31. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8.
    Age-Related Eye Disease Study Research Group · Archives of ophthalmology (Chicago, Ill. : 1960) · 2001
    Randomized trial3,640 participantsVision Support forZinc
  32. Effect of vitamin A and zinc supplementation on the nutriture of children in Northeast Thailand.
    Udomkesmalee E; Dhanamitta S; Sirisinha S; Charoenkiatkul S; Tuntipopipat S; Banjong O; Rojroongwasinkul N; Kramer TR; Smith JC · The American journal of clinical nutrition · 1992
    Randomized trial133 participantsVision Support forZinc