Zinc bisglycinate
Zinc is an essential mineral that the body does not store, so it needs a regular supply.
Zn(C₂H₄NO₂)₂
10–15 mg a day. The EFSA limit (25 mg a day) includes zinc from food: do not add it to other supplements containing zinc.
What it is
It takes part in more than 300 enzyme reactions: skin, immune system, fertility, and protein and hormone synthesis. The bisglycinate form is well absorbed and gentle on the stomach.
What it is used for
The quiz suggests it when your answers justify it. It usually appears with these goals:
What the evidence says
Consistent trials and reviews in people, or health claims authorised in the EU.
Authorised EU claim Zinc contributes to the maintenance of normal skin, hair and nails, to normal fertility and reproduction and to the maintenance of normal testosterone levels in the blood.
| Year | What was studied | What was found | Source |
|---|---|---|---|
| 2020 | Skin / acne | Systematic review and meta-analysis: people with acne have lower zinc levels, and treatment reduces inflammatory papules. | Yee et al.Dermatologic Therapy |
| 2024 | Period pain | Meta-analysis of 6 RCTs (739 women): it reduced the severity of period pain compared with placebo. | Hsu et al.Nutrients |
| 2022 | Immunity | Meta-analysis of trials in adults: zinc lowered CRP, TNF-α and IL-6, markers of inflammation, and raised CD3 and CD4 lymphocytes. | Jafari et al.Critical Reviews in Food Science and Nutrition |
What to look for on the label
- A dose of 10–15 mg.
- For long-term use, ideally with some copper (1 mg).
Precautions
- Keep it 2 hours apart from antibiotics, levothyroxine, iron and penicillamine.
- Above 25 mg a day for months it can cause copper deficiency.
Where to find it
Products whose label meets what this profile asks for: form, dose per serving and nothing that contradicts it. Three at most: quality of the active comes first and, among the best, we look for one option in each price range. We choose by composition, not by who pays. The shops are European or ship to Europe.
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iHerbShips from the US, VAT included€€€High endSeeking Health
Zinc Lozenge 15 mg
15 mg of zinc per lozenge, as bisglycinate (Albion®)
For the reference dose1 lozengeView at iHerb (opens in a new tab)Meets the criteria. A lozenge to suck, sweetened with xylitol.
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ThorneShips from the US: check delivery and customs€€Mid rangeThorne
Zinc Bisglycinate 15 mg
15 mg of zinc per capsule
For the reference dose1 capsuleView at Thorne (opens in a new tab)Meets the criteria. If you take it for a long time, the profile advises pairing it with 1 mg of copper.
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VegaveroShips from Germany€BudgetVegavero
Zinc bisglycinate
12.5 mg of zinc per capsule, as bisglycinate
For the reference dose1 capsuleView at Vegavero (opens in a new tab)Meets the criteria.
We link to the shop; we do not sell anything. Today we earn no commission on any link. If we ever do, the link will say so and the selection will not change: the label decides. Labels checked on 2 November 2026; check the one on the pack before you buy. All these shops deliver to the EU; some of their pages open in Spanish. How we are funded.
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Is it for you?
The quiz decides from your answers, not from a profile.
Profile reviewed on 3 November 2026. Sources: EFSA, Regulation (EU) 432/2012 and published studies. Image: Chemical apparatus in use. Engraving, 18th century. Wellcome Collection, public domain.
General information based on published scientific evidence and EU law. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle, and are not intended to diagnose, treat or prevent any disease.
Do not exceed the daily dose stated on each product. If you take medication, have a medical condition or have any doubts, ask your doctor or pharmacist.