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Quercetin Zinc+

DEVA
4.7
★ ★ ★ ★ ★
(376 ratings)
Zinc 25 mg
European Elder 50 mg
Product Image
Score74
Strong quercetin and zinc at good value, with small botanical additions and insufficient copper for confident long-term use.
How scoring works
Quantity:90 Tablet(s) • (90 servings)
Goals:
Immunity
General Health

Score 74

Strong quercetin and zinc at good value, with small botanical additions and insufficient copper for confident long-term use.
How scoring works
$19.99($0.22 per serving)
iHerb
$ 23.99
Amazon
$ 19.99
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Analysis

Quercetin dihydrate supplies a substantial 500 mg, while zinc is listed in chelated and citrate forms at a 25 mg serving. Those two ingredients account for most of the formula's practical value.

Elderberry, echinacea, and oregano are included at 50 mg or less, so they provide breadth rather than strong standalone doses. Duplicate zinc entries do not explain the amount contributed by each form.

The tablet count and low serving cost make the formula accessible for regular use. Only 0.23 mg copper accompanies the zinc, which is too little to fully address balance concerns during extended daily supplementation.

Who is it for
  • Adults seeking quercetin with zinc
  • Value-conscious immune-formula users
Best for
  • Quercetin-centered immune support
  • Shorter-term zinc supplementation

Pros

  • 500 mg quercetin dihydrate
  • 25 mg zinc serving
  • Useful chelate and citrate forms
  • Good value per serving

Cons

  • Zinc form split is unclear
  • Copper is only 0.23 mg
  • Elderberry is modest at 50 mg
  • Echinacea and oregano are only 25 mg each

Warnings

  • Long-term use of 25 mg zinc with only 0.23 mg copper may reduce copper status.

Nutrient quality

76 High impact

Useful forms and substantial quercetin provide meaningful immune-formula depth. Excessive combined zinc and insufficient balancing copper are important long-term concerns.

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Ingredient transparency

73 High impact

The principal active totals and forms are disclosed without a hidden blend. The zinc split, extract potency, complete directions, and inactive ingredients remain unclear.

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Customer satisfaction

66 High impact

The average customer rating is very strong. The rating base is adequate but not especially deep, while specific review experiences were not supplied.

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Value for money

80 High impact

Serving economics are highly favorable. Quality limitations keep category value restrained.

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Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A Goal FitB+ Strength of SupportB+ CoverageB+ Formula Quality
Zinc · 25 mgEuropean Elder · 50 mg

Zinc and quercetin provide substantial cellular and antioxidant support, while elderberry, echinacea, and oregano broaden the immune approach. The formula also includes copper, but only in a small amount.

The combined listed zinc amount exceeds the usual adult daily upper intake level, making long-term unsupervised use less suitable. Elderberry and the other botanicals are modestly dosed and lack active-marker standardization, so their added contribution is uncertain.

Study evidence
Zinc Supportive 73 studies
General Health
General Health
Impact
High effect
C+ Goal FitB+ Strength of SupportC+ CoverageC+ Formula Quality
Zinc · 25 mg

The formula combines meaningful quercetin and zinc amounts with small botanical additions for antioxidant and immune-oriented support. Zinc has strong foundational evidence, while evidence for the broader botanical mix is less consistent.

Copper is included but at a small amount relative to the substantial zinc intake. Long-term daily use may still impair copper balance, and people sensitive to echinacea or related plants may experience allergic reactions.

Study evidence
Zinc Supportive 60 studies
Testosterone Support
Testosterone Support
Impact
Moderate effect
C+ Goal FitB Strength of SupportD CoverageF Formula Quality
Zinc · 25 mg

Zinc provides the main testosterone-relevant action and is present at a useful targeted amount. Quercetin and the botanical extracts are immune-oriented and do not add dependable endocrine pathways.

The small copper amount may not fully balance long-term zinc use, and duplicate zinc sources make the active contribution less clear. Elderberry, echinacea, and oregano create goal-irrelevant padding around an otherwise useful mineral.

Study evidence
Zinc Disputed 7 studies
Hair Health
Hair Health
Impact
Moderate effect
C+ Goal FitB- Strength of SupportF CoverageD Formula Quality
Zinc · 25 mg

Zinc may support hair when deficiency contributes to shedding, but the immune-focused botanicals add little direct hair value. Quercetin has an antioxidant rationale without strong human hair evidence.

The zinc amount is high and paired with too little copper for ideal long-term balance. Routine high-dose zinc use may cause nausea or gradually reduce copper status.

Study evidence
Copper Adverse 4 studies
Zinc Supportive 22 studies
Skin Health
Skin Health
Impact
Moderate effect
D+ Goal FitB- Strength of SupportD CoverageD Formula Quality
Zinc · 25 mgCopper · 0.23 mg

Quercetin and zinc provide antioxidant and normal skin-integrity support. The zinc forms and quercetin amount are clearly identified.

Copper is too low to offer meaningful balance for repeated higher zinc intake, while elderberry, echinacea, and oregano mainly serve an immune purpose. No collagen, hydration active, ceramide, or direct barrier lipid creates a complete skin strategy.

Study evidence
Copper Supportive 16 studies
Zinc Supportive 66 studies
Vision Support
Vision Support
Impact
Moderate effect
D+ Goal FitB- Strength of SupportD CoverageF Formula Quality
Zinc · 25 mgCopper · 0.23 mg

Zinc supports retinal mineral functions, while quercetin adds general antioxidant activity. Elderberry, echinacea, and oregano are aimed more at immune support than vision.

The zinc amount is meaningful and paired with only a very small copper amount. Prolonged daily zinc use may still reduce copper status, and the herbal additions do not provide a balanced ocular formula.

Study evidence
Copper Supportive 7 studies
Zinc Supportive 39 studies

Ingredients

IngredientAmount per serving
Zinc (Zinc Amino Acid Chelate, Zinc Citrate)
 25 mg
Copper (Copper Amino Acid Chelate)
 0.23 mg
Quercetin (Quercetin Dihydrate)
 500 mg
Elderberry Fruit Extract (Sambucus nigra Fruit Extract)
 50 mg
Echinacea purpurea root extract
25 mg
Oregano Leaf Extract
25 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
Report overview
Zinc (Zinc Amino Acid Chelate, Zinc Citrate) · 25 mg OverallScore65
C Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value

Zinc citrate supports absorption, but the accompanying amino acid chelate does not identify its ligand. The combined listed zinc amount exceeds the usual adult upper limit, and the small copper amount falls below the range commonly used to balance high-dose zinc. The serving cost is competitive, though the high dose makes routine long-term use less suitable.

View ingredientView products
European Elder (Sambucus nigra Fruit Extract) · 50 mg OverallScore59
C+ Active Ingredient Quality & BioavailabilityC- Dose, Safety & Label TransparencyD+ Value

The label precisely identifies Sambucus nigra fruit extract, but the amount is modest for elderberry-focused use. No extraction ratio or active-marker standardization is provided. Normalized cost is moderate, with quercetin and zinc supplying value beyond elderberry.

View ingredientView products
Loading alternative details
91 Performance

Immune Support

NATURELO Premium Supplements
<p>Elderberry, echinacea, vitamin C, and zinc provide broader immune-focused coverage than zinc with a modest elderberry component alone. Botanical active-marker standards remain absent, but the formula avoids relying mainly on an aggressive zinc amount.</p>
89 Performance

Elderberry + with Zinc

Paradise
<p>A substantial Sambucus nigra extract with zinc citrate keeps both core ingredients in a focused formula. Full directions and inactive ingredients are missing, but the elderberry component is more prominent and the zinc design appears less aggressive than the original.</p>
88 Performance

Sambucus Zinc-C

NOW
<p>Elderberry, zinc, and vitamin C provide a concise immune-focused combination with a low serving cost. Botanical identification remains incomplete, but the moderate blend offers a more balanced routine profile than emphasizing high zinc alone.</p>
91 Budget

Zinc Picolinate 22 mg

Solgar
<p>Zinc picolinate provides a well-absorbed maintenance amount at a much lower serving cost. Elderberry and other botanicals are absent, but the focused dose is easier to use routinely than a higher or ambiguously combined zinc amount.</p>
87 Budget

Elderberry 500 mg

NOW
<p>A concentrated elderberry formula provides substantially more botanical material at a lower serving cost. Zinc is absent and species detail is incomplete, but the product is a clearer choice when elderberry rather than high-dose zinc is the priority.</p>
84 Budget

Zinc Gluconate 30 mg

Swanson
<p>A simple zinc gluconate tablet supplies a substantial amount at a much lower serving cost. Elderberry and copper are absent, so sustained daily use still requires attention to copper balance and the formula is mainly a budget zinc option.</p>
90 Value

Zinc Picolinate 25 mg

Thompson
<p>Zinc picolinate supplies a well-absorbed amount at very low serving cost. Elderberry is absent and copper is not included, but the focused capsule offers strong value when zinc rather than a multi-botanical immune blend is wanted.</p>
86 Value

Elderberry 450 mg

Solaray
<p>A substantial disclosed elderberry amount provides low-cost botanical support without prolonged high-zinc exposure. Species, extraction, and active markers are not specified, but the simple formula offers strong value when elderberry is the main goal.</p>
87 Value

Chewable Zinc plus Vitamins C & B-6 Cherry Flavor

21st Century
<p>A maintenance zinc amount with vitamin C and vitamin B6 provides practical immune-related coverage at low serving cost. Elderberry is absent and duplicate vitamin C entries create some ambiguity, but the zinc amount is more suitable for routine use than aggressive high-dose options.</p>
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. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  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. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  34. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  35. What did we learn in 35 years of research on nutrition and supplements for age-related macular degeneration: a systematic review.
    Pameijer EM; Heus P; Damen JAA; Spijker R; Hooft L; Ringens PJ; Imhof SM; van Leeuwen R · Acta ophthalmologica · 2023
    Systematic review27 studies pooledVision Support forCopper
  36. Dietary Nutrient Intake and Progression to Late Age-Related Macular Degeneration in the Age-Related Eye Disease Studies 1 and 2.
    Agrón E; Mares J; Clemons TE; Swaroop A; Chew EY; Keenan TDL; AREDS and AREDS2 Research Groups · Ophthalmology · 2021
    Cohort study8,242 participantsVision Support forCopper
  37. Association between late age-related macular degeneration and dietary intake of copper, iron, zinc and selenium: a 2005-2008 NHANES cross-sectional observational study.
    Lu Y; Li C; Liu Y; Wu T; Lu P · BMC ophthalmology · 2025
    Observational study4,996 participantsVision Support forCopper
  38. Associations between dietary nutrient intake and the risk of multiple age-related ocular diseases: evidence from longitudinal analysis.
    Yang Y; Zou H · The journal of nutrition, health & aging · 2026
    Cohort study103,192 participantsVision Support forCopper
  39. Dietary habits and dietary nutrient intake in patients with age-related macular degeneration: A case-control study.
    Šalková Kráľová J; Kolář P; Kapounová Z; Veselý P; Derflerová Brázdová Z · Central European journal of public health · 2023
    Case-control study151 participantsVision Support forCopper
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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