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Zinc Gluconate 50 mg

4.7
★ ★ ★ ★ ★
(1294 ratings)
Zinc 50 mg
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Score82

Useful zinc delivery is undermined by an excessive daily amount. The low serving cost does not make 50 mg appropriate for routine long-term use.

How scoring works
Capsule
Quantity:250 Capsule(s) • (250 servings)
Goals:
Immunity
Hair Health

Score 82

Useful zinc delivery is undermined by an excessive daily amount. The low serving cost does not make 50 mg appropriate for routine long-term use.

How scoring works
$14.19($0.05 per serving)
iHerb
$ 14.19
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Analysis

Zinc gluconate supplies a clearly identified and reasonably absorbed mineral form. The 50 mg amount is substantially above typical maintenance needs.

Zinc can support immune function, skin repair, normal hormone production, and other basic processes when intake is low. A single mineral does not cover the other nutrients involved in those goals.

Daily use at this amount exceeds the usual adult upper intake level and can gradually lower copper status. It fits short, directed use better than an ongoing wellness routine.

Who is it for
  • Adults using high-dose zinc for a short, specifically directed period
  • People who prefer a simple zinc gluconate capsule
Best for
  • Short-term zinc repletion when a professional has advised the amount
  • Buyers who need a large capsule supply rather than broad nutrient coverage

Pros

  • Clearly states the elemental zinc amount
  • Uses the established gluconate form
  • Single-capsule formula is easy to assess
  • Large supply offers favorable serving value

Cons

  • Amount is excessive for daily maintenance
  • No copper is included for mineral balance
  • Single-mineral design has narrow goal coverage

Warnings

  • 50 mg exceeds the usual adult upper intake level and is not suited to routine unsupervised use.
  • Repeated use at 50 mg can cause nausea, especially on an empty stomach.
  • Long-term high zinc intake without copper can reduce copper status and affect blood or nerve health.
  • Zinc can reduce absorption of tetracycline or quinolone antibiotics, so dose spacing should follow the medicine instructions.

Nutrient quality

77 High impact

Zinc gluconate is a well-established organic salt with generally useful absorption. The amount exceeds the adult upper intake level and is too aggressive for routine long-term use.

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Ingredient transparency

82 Highest impact

The elemental amount and gluconate form are stated clearly. Directions and inactive ingredients are not supplied, limiting full label transparency.

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Customer satisfaction

71 High impact

The supplied aggregate rating indicates strong customer satisfaction. Specific comments are unavailable, so complaint patterns and intended-use fit cannot be verified.

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Value for money

97 Highest impact

The very low serving cost and simple formula provide excellent price efficiency. Dose safety rather than cost is the practical limitation.

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Report analysis

Goals

Immunity
Immunity
Impact
High effect
A- Goal FitC- Strength of SupportD- CoverageA- Formula Quality
Zinc · 50 mg

Zinc directly supports immune-cell development and signaling, although a swallowed capsule lacks the local lozenge effect used in acute cold protocols. Zinc has strong established immune evidence, particularly for correcting inadequate intake and in appropriately formulated lozenges.

The 50 mg zinc amount exceeds the usual adult daily upper limit and is poorly suited to prolonged unsupervised use. Zinc gluconate is a well-established form with a clearly disclosed elemental amount.

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 can support follicle growth and repair when low zinc status contributes to shedding. The gluconate form is suitable, but the daily amount exceeds the usual adult upper intake level.

A single mineral does not address structural, hormonal, antioxidant, or circulation pathways. Prolonged high-dose use without copper can cause copper depletion and may worsen hair or blood abnormalities.

Study evidence
Zinc Supportive 22 studies
General Health
General Health
Impact
Moderate effect
B Goal FitD+ Strength of SupportD CoverageB+ Formula Quality
Zinc · 50 mg

Zinc gluconate is a recognized form of an essential trace mineral with clear relevance to immune function and normal cell processes. The label fully states the active amount.

The daily amount exceeds the usual adult upper intake level, which makes routine unsupervised use a poor fit for general maintenance. Long-term use also lacks copper support and may disturb mineral balance.

Study evidence
Zinc Supportive 60 studies
Testosterone Support
Testosterone Support
Impact
Moderate effect
B Goal FitD+ Strength of SupportF CoverageB Formula Quality
Zinc · 50 mg

Zinc directly supports steroidogenesis when zinc status is low, and the gluconate form is clearly disclosed. The 50 mg amount exceeds the usual adult upper limit and is poorly suited to routine unsupervised use.

The single-mineral formula offers strong depth in one deficiency pathway but no stress, vitamin D, or free-hormone support. Long-term high-dose zinc without copper may cause copper depletion.

Study evidence
Zinc Disputed 7 studies
Vision Support
Vision Support
Impact
Moderate effect
B Goal FitD Strength of SupportF CoverageC+ Formula Quality
Zinc · 50 mg

Zinc is an established vision-support mineral and a component of AREDS2-style nutrition. The single-mineral formula lacks copper, carotenoids, vitamins C and E, and omega-3 lipids.

The zinc amount exceeds the usual adult upper intake level and is too high for routine unsupervised use. Prolonged use without copper may impair copper status despite the acceptable gluconate form.

Study evidence
Zinc Supportive 39 studies
Skin Health
Skin Health
Impact
Moderate effect
C+ Goal FitD Strength of SupportF CoverageB+ Formula Quality
Zinc · 50 mg

Zinc directly supports skin repair, barrier maintenance, and normal inflammatory control. The single-mineral formula offers no antioxidant or hydration pathway.

The amount exceeds the usual adult upper intake level and is too high for routine unsupervised use. Prolonged use without copper may impair copper status despite the acceptable gluconate form.

Study evidence
Zinc Supportive 66 studies

Ingredients

IngredientAmount per serving
Zinc (Zinc Gluconate)
 50 mg
Adults 18–50
Report overview
Zinc (Zinc Gluconate) · 50 mg OverallScore74
B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyA+ Value

Zinc gluconate provides a well-established organic form in an economical capsule. The large daily amount reaches above the usual upper intake limit, making repeated unsupervised use less suitable. No copper is included, so prolonged use may raise the risk of copper depletion despite the excellent serving value.

View ingredientView products
Loading alternative details
96 Performance

Zinc Picolinate 25 mg

Thompson
A practical, well-absorbed zinc amount is safer for routine use than the original high-dose formula. Picolinate is a well-absorbed zinc form, and the amount is meaningful without crossing the usual adult upper limit. The simple formula and very low serving cost make it a practical zinc supplement.
95 Performance

Zinc Picolinate 22 mg

Solgar
A practical, well-absorbed zinc amount is safer for routine use than the original high-dose formula. Picolinate offers strong absorption potential at a useful maintenance amount. The focused formula and very low serving cost make it a practical choice without an obvious dosing excess.
94 Performance

Zinc Picolinate

NutriCology
A practical, well-absorbed zinc amount is safer for routine use than the original high-dose formula. Picolinate provides a well-absorbed form at a strong maintenance amount in a simple capsule. Zinc picolinate is a well-regarded form with favorable absorption.
76 Budget

Zinc Gluconate 30 mg

Swanson
Lower recurring cost makes this a more economical zinc option than the original while retaining a clearly characterized active profile. Gluconate provides reasonable absorption at a substantial zinc amount. The simple tablet is exceptionally economical, though sustained daily use without copper may impair mineral balance.
77 Budget

Zinc 30 mg

Nature Made
This candidate does not cost less per serving than the original, but it is among the closest low-cost choices in the supplied pool. Zinc gluconate provides a meaningful amount in a focused, very inexpensive tablet. It is suitable for targeted use, although prolonged daily intake at this level without copper may gradually disturb copper balance.
80 Budget

Zinc Chelate 30 mg

Nature's Way
This candidate does not cost less per serving than the original, but it is among the closest low-cost choices in the supplied pool. Zinc bisglycinate provides a well-absorbed form at a robust daily amount. The focused capsule is clearly labeled and very inexpensive, but no copper is included.
96 Value

Zinc Picolinate 22 mg

Swanson
A safer amount, strong form quality, and economical use provide better long-term value than the original high-dose formula. Picolinate provides a well-absorbed form at a practical maintenance amount. Zinc picolinate is a well-regarded form with favorable absorption.
96 Value

Zinc Picolinate 25 mg

Kirkman
A safer amount, strong form quality, and economical use provide better long-term value than the original high-dose formula. Zinc picolinate provides a highly absorbable form at a substantial but not excessive amount. Small calcium and phosphorus additions do little to strengthen the zinc formula, while inactive ingredients are not shown.
96 Value

Zinc Picolinate 25 mg

Country Life
A safer amount, strong form quality, and economical use provide better long-term value than the original high-dose formula. Picolinate offers strong absorption at a useful amount below the adult upper limit. The small calcium addition contributes little, and the serving cost is higher than many basic zinc products.
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. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  27. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  28. 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
  29. 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
  30. 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
  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