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Zinc A.G.

4.9
★ ★ ★ ★ ★
(1012 ratings)
Zinc 20 mg
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Score80

Two favorable chelated forms and a measured amount make this a good daily zinc option. Its price and narrow coverage keep it from standing out further.

How scoring works
Tablet
Quantity:180 Tablet(s) • (180 servings)
Goals:
Immunity
General Health
Testosterone Support
Hair Health
Skin Health
Fitness

Score 80

Two favorable chelated forms and a measured amount make this a good daily zinc option. Its price and narrow coverage keep it from standing out further.

How scoring works

Also available as

1 option
60 servings Zinc 20 mg • 60 Tablet(s) • 60 servings $17.50 ($0.29 per serving)
$47.95($0.26 per serving)
iHerb
$ 47.95
iHerb
$ 49.23
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Analysis

The 20 mg serving uses zinc arginate and zinc glycinate, two well-defined chelated forms. Their combination should suit people who care about absorption and digestive tolerance.

The amount provides meaningful daily support while remaining below the adult upper intake level. Its value is strongest for correcting or avoiding low zinc intake, not for broadly boosting fitness or hormones.

No copper or complementary nutrients expand the formula. Long-term users should still count zinc from other sources, although the maintenance-level amount is less concerning than high-dose alternatives.

Who is it for
  • Adults seeking chelated zinc for routine use
  • People who prefer a moderate amount over high-dose tablets
Best for
  • Daily zinc maintenance
  • Users who value form quality and digestive tolerance

Pros

  • Uses arginate and glycinate forms
  • Practical amount for routine support
  • Clear active disclosure
  • Stays below the adult upper intake level

Cons

  • No copper is included
  • Costs more than many single-zinc products
  • Does not cover other nutritional pathways

Warnings

  • 20 mg may cause nausea when taken on an empty stomach.
  • Long-term use alongside other zinc supplements can reduce copper absorption, so total zinc intake matters.
  • Zinc can reduce absorption of tetracycline or quinolone antibiotics, so dose spacing should follow the medicine instructions.

Nutrient quality

94 Highest impact

Arginate and glycinate are well-regarded chelated forms with good absorption potential. The amount stays within a practical maintenance range for most adults.

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Ingredient transparency

76 High impact

The total zinc amount is clear, but two full-amount form entries make their proportions uncertain. Directions and inactive ingredients are not supplied, limiting full label transparency.

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Customer satisfaction

68 High impact

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

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Value for money

77 High impact

Premium chelates justify some added cost, but the serving price is only moderate. Lower-cost chelated options compete closely.

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Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A+ Goal FitA+ Strength of SupportC- CoverageA- Formula Quality
Zinc · 20 mg

Zinc arginate and glycinate provide direct support for immune-cell development in well-absorbed forms. The 20 mg amount is appropriate for daily maintenance without approaching the adult upper limit.

Clear form disclosure strengthens confidence in the tablet. Copper is not included, though imbalance risk is lower at this moderate amount than with high-dose zinc.

Study evidence
Zinc Supportive 73 studies
General Health
General Health
Impact
Highest effect
A Goal FitA- Strength of SupportC CoverageA Formula Quality
Zinc · 20 mg

Zinc supports immune readiness, antioxidant defenses, DNA synthesis, and many enzyme systems. The maintenance-oriented amount is well suited to foundational support without relying on a broad blend.

Arginate and glycinate are well-defined chelated forms that support absorption and tolerance. The formula is narrow but supplies meaningful depth for one essential mineral.

Study evidence
Zinc Supportive 60 studies
Testosterone Support
Testosterone Support
Impact
Highest effect
B+ Goal FitA Strength of SupportC- CoverageA Formula Quality
Zinc · 20 mg

The 20 mg zinc amount uses well-absorbed arginate and glycinate forms, providing a sound foundation for steroid hormone synthesis. Benefit is most likely when zinc intake or status is inadequate.

The focused formula does not address vitamin D, magnesium, boron, or stress regulation. Its dose remains below the adult upper limit, though prolonged use still warrants attention to copper intake.

Study evidence
Zinc Disputed 7 studies
Hair Health
Hair Health
Impact
High effect
B Goal FitA Strength of SupportD CoverageA- Formula Quality
Zinc · 20 mg

Zinc supports follicle cell division and may help hair shedding when deficiency is present. It is unlikely to improve hair when zinc status is already adequate.

Arginate and glycinate are favorable chelated forms with clear total labeling. The maintenance-range amount is reasonable, though long-term use still requires attention to total zinc intake and copper balance.

Study evidence
Zinc Supportive 22 studies
Skin Health
Skin Health
Impact
High effect
C+ Goal FitA Strength of SupportD+ CoverageA+ Formula Quality
Zinc · 20 mg

Chelated zinc supports normal skin repair, turnover, and antioxidant enzymes. The 20 mg amount is clearly disclosed and provides focused mineral support rather than comprehensive skin coverage.

Glycinate and arginate forms support good absorption and tolerance. Regular long-term use without copper may gradually disturb copper balance, especially at the stated amount.

Study evidence
Zinc Supportive 66 studies
Fitness
Fitness
Impact
High effect
D+ Goal FitA- Strength of SupportD- CoverageA- Formula Quality

Zinc arginate and glycinate provide 20 mg of a well-absorbed mineral important for normal enzyme function and recovery. The amount is practical for maintaining zinc intake.

Zinc is not a direct power or endurance aid unless low status is limiting health or training. The single-mineral tablet does not cover energy, hydration, blood flow, or muscle repair, and it contains no copper for extended use.

Study evidence
Zinc Supportive 7 studies

Ingredients

IngredientAmount per serving
Zinc (Zinc Arginate, Zinc Glycinate)
 20 mg
Gluten Free Adults 18–50 Vegetarian
Report overview
Zinc (Zinc Arginate, Zinc Glycinate) · 20 mg OverallScore84
A Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyC Value

The paired arginate and glycinate forms support good absorption and tolerance. The maintenance-range amount is suitable for routine use, though no copper is included. Tablet delivery and a middling serving cost keep it from standing out.

View ingredientView products
Loading alternative details
81 Performance

Zinc Picolinate 22 mg

Solgar
Strong zinc-form quality and a practical dose make this a more dependable routine option than the original. 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.
81 Performance

Chelated Zinc 30 mg

Swanson
Strong zinc-form quality and a practical dose make this a more dependable routine option than the original. A branded glycinate chelate offers excellent absorption potential at a substantial amount. The simple capsule is highly economical, though sustained use without copper may impair mineral balance.
80 Performance

Zinc Chelate 30 mg

Nature's Way
Strong zinc-form quality and a practical dose make this a more dependable routine option than the original. 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.
82 Budget

L-OptiZinc 30 mg

NOW
Lower recurring cost makes this a more economical zinc option than the original while retaining a clearly characterized active profile. Zinc monomethionine provides excellent absorption potential at a substantial amount. A small copper addition is helpful but remains too low to fully balance sustained high zinc use.
82 Budget

Zinc Picolinate 25 mg

Thompson
Lower recurring cost makes this a more economical zinc option than the original while retaining a clearly characterized active profile. 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.
82 Budget

Zinc 30 mg

Nature's Life
Lower recurring cost makes this a more economical zinc option than the original while retaining a clearly characterized active profile. Zinc picolinate with copper provides a coherent, economical mineral-balance formula. The zinc amount is substantial, and repeated copper entries make the total less clear than it should be.
90 Value

OptiZinc

Source Naturals
The combination of form quality, practical dosing, and serving value provides a stronger quality-to-cost balance than the original. Zinc methionine provides a well-absorbed chelated form at a robust amount, and added copper offers partial balance. The copper amount is small relative to the zinc, but the formula is safer for sustained use than unbalanced high-dose options.
89 Value

Chelated Zinc 30 mg

Carlson
The combination of form quality, practical dosing, and serving value provides a stronger quality-to-cost balance than the original. Glycinate chelate offers high-quality absorption and tolerance at a robust amount. Zinc glycinate chelate is a highly regarded form for absorption and tolerance.
89 Value

Zinc Picolinate 22 mg

Swanson
The combination of form quality, practical dosing, and serving value provides a stronger quality-to-cost balance than the original. Picolinate provides a well-absorbed form at a practical maintenance amount. Zinc picolinate is a well-regarded form with favorable absorption.
Report alternatives

Sources

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

  1. Serum essential elements and muscle health in Chinese adults: a community-based study.
    Ye H; Wang D; Liu S; Yao N; Gui Z; Huang Z; Zeng Y; Liu L; Wan H; Shen J · Nutrition & metabolism · 2025
    Cross-sectional study5,389 participantsFitness forZinc
  2. Iron, zinc and magnesium nutrition and athletic performance.
    McDonald R; Keen CL · Sports medicine (Auckland, N.Z.) · 1988
    Narrative reviewFitness forZinc
  3. A comprehensive review of the physiology and evidence base to guide the use of ergogenic and medical supplements for enhanced cycling performance.
    Rowland A; Edwards S; Prieto-Bellver G; Menz B; Rowland A; Cornelisse E; Karapetis CS; Wallen MP; Hopkins AM · Journal of the International Society of Sports Nutrition · 2026
    Narrative reviewFitness forZinc
  4. Association between composite dietary antioxidant index and handgrip strength in American adults: Data from National Health and Nutrition Examination Survey (NHANES, 2011-2014).
    Wu D; Wang H; Wang W; Qing C; Zhang W; Gao X; Shi Y; Li Y; Zheng Z · Frontiers in nutrition · 2024
    Cross-sectional study6,019 participantsFitness forZinc
  5. [Survey of the dietary status and physical activity level and fitness of college freshmen in Chengdu].
    Han H; Lv X; Wang D · Wei sheng yan jiu = Journal of hygiene research · 2010
    Cross-sectional study1,200 participantsFitness forZinc
  6. Minerals and Sarcopenia in Older Adults: An Updated Systematic Review.
    van Dronkelaar C; Fultinga M; Hummel M; Kruizenga H; Weijs PJM; Tieland M · Journal of the American Medical Directors Association · 2023
    Systematic review45 studies pooledFitness 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. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  31. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc