Zinc Bisglycinate vs Picolinate: The Complete Comparison

Zinc is an essential trace element involved in more than 300 enzymatic reactions in the body. Immunity, skin, hair, fertility, hormonal metabolism: its range of action is huge. But not all forms of zinc are equal. Bisglycinate, picolinate, citrate, gluconate, oxide… which one should you choose for optimal absorption and good digestive tolerance? At Herba Barona, our independent supplement shop at 10 rue Théophile Roussel, Paris 12th, we help you see things clearly.

Why is zinc so important?

Zinc is involved in fundamental biological functions:

• Immunity: zinc is essential for the development and function of immune cells (T lymphocytes, NK cells). Even a mild deficiency can weaken your natural defences.
• Skin, hair, nails: zinc contributes to keratin and collagen synthesis. It plays a role in skin cell renewal and wound healing.
• Fertility and hormones: zinc is involved in testosterone production and sperm quality in men, and in hormonal balance in women.
• Antioxidant activity: zinc is a cofactor of superoxide dismutase (SOD), one of the body’s most powerful antioxidant enzymes.
• Taste and smell: a zinc deficiency can impair the senses of taste and smell.

The body does not store zinc, so a daily intake is necessary. Recommended intakes are 11 mg/day for men and 8 mg/day for women.

Comparing the different forms of zinc

Form	Bioavailability	Digestive tolerance	Price	Our verdict
Zinc bisglycinate (chelated)	Excellent (40-50%)	Excellent	Mid-high	The best overall choice
Zinc picolinate	Very good (35-45%)	Very good	Mid-high	A quality alternative
Zinc citrate	Good (30-35%)	Good	Mid-range	Good value for money
Zinc gluconate	Average (25-30%)	Fair	Budget	Entry-level
Zinc oxide	Low (10-15%)	Poor	Very low	Best avoided

Zinc bisglycinate: the 2026 benchmark

Zinc bisglycinate is a chelated form in which zinc is bound to two molecules of glycine, an amino acid. This chelation offers several major advantages: superior intestinal absorption thanks to transport via amino acid carriers, excellent digestive tolerance (no nausea or metallic aftertaste), and no interaction with dietary phytates. Albion’s TRAACS label (The Real Amino Acid Chelate System) guarantees genuine, tested chelation. This is the form we recommend as a priority here in Paris.

Zinc picolinate: the well-documented alternative

Zinc picolinate is bound to picolinic acid, a natural metabolite of tryptophan. A study published in the Journal of Nutrition showed that zinc picolinate was better absorbed than gluconate and citrate. Its bioavailability is comparable to bisglycinate, although slightly lower according to some meta-analyses. It’s an excellent choice, particularly for people who prefer a non-amino-acid-chelated form.

Zinc citrate: the good compromise

Zinc citrate offers a good compromise between bioavailability and price. Citric acid facilitates intestinal absorption, and tolerance is generally good. It’s the form often chosen by brands aiming for an optimised price-quality ratio.

Our zinc selection in Paris

• Zinc Bisglycinate Dynveo 10 mg TRAACS: the benchmark. Albion TRAACS chelated zinc, 60 capsules, optimal 10 mg dose per capsule. Excellent bioavailability and tolerance.
• Zinc Bisglycinate Novoma 120 capsules: a budget-friendly format for longer courses, with an excellent price-quality ratio.
• Zinc Picolinate Solgar 22 mg, 100 tablets: the reference picolinate form, dosed at 22 mg, ideal for people with higher needs.
• Zinc Citrate Solaray 15 mg, 60 capsules: a quality citrate alternative at an accessible price.

Browse our full range in the Zinc in Paris category.

Zinc and immunity: an inseparable duo

Zinc is often called the “guardian of the immune system”. It’s involved at every step of the immune response: development of immune cells in the thymus, activation of T lymphocytes, antibody production, Natural Killer cell activity. A meta-analysis published in Open Forum Infectious Diseases showed that zinc supplementation could reduce the duration of common winter colds. Here in Paris, where crowded public transport favours the spread of germs, good zinc status is a valuable asset during the cold season.

Zinc and skin health

Zinc regulates sebum production and helps maintain normal skin. It is often recommended for skin blemishes, alongside a balanced diet. The bisglycinate form is particularly well suited for this purpose, as it is very well tolerated and does not cause the digestive upsets that could worsen skin issues.

How to take zinc properly

• Timing: zinc is ideally taken in the morning on an empty stomach, or away from meals rich in whole grains (phytates reduce its absorption). With bisglycinate, this precaution matters less.
• Interactions: don’t take zinc at the same time as iron or copper (leave at least 2 hours between them). Prolonged zinc supplementation (over 3 months at more than 15 mg/day) can reduce copper reserves.
• Dosage: 10 to 15 mg/day for maintenance, up to 25 mg/day for a short, intensive course.
• Duration: courses of 2 to 3 months, renewable after a one-month break.

Frequently asked questions about zinc

Does zinc make hair grow?

Zinc contributes to the synthesis of keratin, the protein that makes up hair. A zinc deficiency can indeed lead to hair loss. Supplementation is worthwhile if your zinc status is insufficient, which can be checked with a blood test.

Can zinc and magnesium be taken together?

Yes, zinc and magnesium can be taken together without any interaction issues. Some formulas even combine both minerals (like the ZMA blend popular among athletes).

Where can I buy quality zinc in Paris?

At Herba Barona, 10 rue Théophile Roussel, Paris 12th (Ledru-Rollin metro), we offer the best forms of zinc: TRAACS bisglycinate from Dynveo, Solgar picolinate, Solaray citrate. Personalised advice in-store, Tuesday to Saturday, 9:30am-6:30pm.