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evidence · mechanism · dose
Supplements/Mineral

Zinc Picolinate

Zinc chelated to picolinic acid — one of the most bioavailable oral forms.

Immune FunctionSkin, Hair & NailsHair SupportMen's Health

Overview

Zinc chelated to picolinic acid — one of the most bioavailable oral forms.

Natural sources
    Common forms

      Forms & variants of Zinc

      Different chemical forms of Zinc behave differently. Browse each form's mechanism, bioavailability, and best-use context.

      Parent
      Zinc

      Cofactor for ~300 enzymes — critical for testosterone, immune function, and DNA synthesis.

      Bisglycinate
      Zinc Bisglycinate

      Glycine-chelated zinc — high absorption and very gentle on the stomach.

      Acetate (lozenges)
      Zinc Acetate

      Lozenge form shown to shorten cold duration when used at first symptoms.

      Gluconate
      Zinc Gluconate

      Most common over-the-counter zinc form — affordable, moderate bioavailability.

      Bisglycinate
      Zinc Bisglycinate (High-Bio)

      Chelated zinc with superior absorption and tolerability.

      Mechanism of action

      Picolinic acid is a natural zinc transporter secreted by the pancreas — bypasses competition with other divalent cations.

      Pathways
      • · Zn-finger transcription factors
      • · 5α-reductase modulation
      • · Antioxidant (SOD1)

      Effects on the body

      Organ system effects

      Evidence-based benefits

      Highest serum Zn rise vs other oral forms in small comparison

      Limited evidence

      Potential side effects

      Common
      • · Nausea on empty stomach
      Rare
        Serious
        • · Copper deficiency at >40 mg/d long-term

        Drug interactions

        No notable interactions reported.

        Safety & non-supplemental interactions

        Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.

        Avoid with these conditions
        • ·Autoimmune disease (theoretical immune activation)
        Avoid / monitor with these medications
        • ·Immunosuppressants

        Supplement interactions

        Pairs well with
        • Copper
          Prevents long-term copper deficiency.
        Avoid combining with

        No specific avoidances listed.

        Dosing & bioavailability

        Typical dose
        15–30 mg elemental
        Upper safe limit
        40 mg/d UL
        With food?
        With food

        Where to buy

        Affiliate-style search links to reputable retailers. We don't endorse specific brands — verify third-party testing (USP, NSF, Informed Sport) before purchase.

        Mineral
        Zinc Picolin…
        Amazon
        Wide selection · fast shipping
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        iHerb
        Global delivery · curated brands
        Mineral
        Zinc Picolin…
        Thorne
        Practitioner-grade · NSF tested

        Scientific evidence (8)

        RCTAgents Actions · 1987

        Comparative absorption of zinc picolinate, citrate, and gluconate

        Barrie SA, et al.

        Crossover trial of zinc forms in healthy adults.

        Key findings

        Picolinate showed superior absorption vs citrate and gluconate.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Zinc Picolinate — Highest serum Zn rise vs other oral forms in small comparison

        Live PubMed search

        Live results for "Zinc Picolinate Highest serum Zn rise vs other oral forms in small comparison" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

        Opens current human and preclinical literature matching Zinc Picolinate and "Highest serum Zn rise vs other oral forms in small comparison". Filter by RCT, meta-analysis, or year on the results page.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Zinc Picolinate — randomized controlled trial

        Live PubMed search

        Live results for "Zinc Picolinate randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

        Opens current human and preclinical literature matching Zinc Picolinate and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Zinc Picolinate — meta-analysis

        Live PubMed search

        Live results for "Zinc Picolinate meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

        Opens current human and preclinical literature matching Zinc Picolinate and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Zinc Picolinate — pharmacokinetics

        Live PubMed search

        Live results for "Zinc Picolinate pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

        Opens current human and preclinical literature matching Zinc Picolinate and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Zinc Picolinate — safety adverse events

        Live PubMed search

        Live results for "Zinc Picolinate safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

        Opens current human and preclinical literature matching Zinc Picolinate and "safety adverse events". Filter by RCT, meta-analysis, or year on the results page.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Zinc Picolinate — dose response

        Live PubMed search

        Live results for "Zinc Picolinate dose response" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

        Opens current human and preclinical literature matching Zinc Picolinate and "dose response". Filter by RCT, meta-analysis, or year on the results page.

        Open study
        Systematic reviewGoogle Scholar · 1970

        Google Scholar: Zinc Picolinate — clinical evidence

        Live Scholar search

        Cross-database citation index for Zinc Picolinate as it relates to "clinical evidence".

        Key findings

        Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

        Open study
        Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.