Can I take Glutamine with Zinc?

Understanding the interactions, benefits, and safety of combining these two powerful supplements.

Glutamine
+
Zinc

Short answer

We found no documented interaction between Glutamine and Zinc in the sources below. That isn't proof the combination is right for you: check each one's cautions, and ask your pharmacist if you take medication.

Glutamine

What it is: An amino acid the body makes and uses for energy and to build protein.

What the research says: It has little or no benefit for strength or recovery. It's studied mainly in cancer care and after surgery.

Cautions

  • Studies report no side effects at up to 45 g a day for several weeks; reported side effects elsewhere include headache and nausea.
  • Don't confuse it with glutamate, which is a different substance.

In Holitro: Glutamine (750 mg per capsule)

Sources: NIH Office of Dietary Supplements: Dietary Supplements for Exercise and Athletic Performance (updated March 2021); Memorial Sloan Kettering Cancer Center, About Herbs: Glutamine (updated September 2026)

Zinc

What it is: An essential mineral for the immune system, wound healing, taste, and making DNA and proteins.

What the research says: Zinc is needed for normal immune function; it's commonly taken to make sure intake is adequate.

Cautions

  • Adults shouldn't exceed 40 mg a day from all sources unless under medical care.
  • Too much for a long time can lower copper levels and immunity.
  • Very high doses can reduce magnesium absorption.

Medicines to check

  • Quinolone and tetracycline antibiotics: take the antibiotic at least 2 hours before or 4 to 6 hours after zinc
  • Penicillamine: take at least 1 hour apart
  • Thiazide diuretics can lower zinc levels

In Holitro: Zinc (25 mg per capsule)

Source: NIH Office of Dietary Supplements: Zinc: Fact Sheet for Consumers (updated October 2022)

Check with your doctor or pharmacist, especially if you take medication.

Check your stack — free

Educational information only, not medical advice. This reflects general ingredient overlap, not a personalized safety review. Always check with your doctor or pharmacist before combining supplements, especially if you take medication, are pregnant or nursing, or manage a health condition. These statements have not been evaluated by the FDA.

Stop Guessing Your Dosages.

Balancing dosages across multiple different bottles is risky, inefficient, and expensive. Glutamine is already lab-dosed in our Gut Pack, and Zinc is in our Immune Pack — either way, that’s one less bottle to manage.

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