Does N-Acetyl Cysteine interact with Glycine?

Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Take together· emerging evidence

GlyNAC, raises glutathione.

Glutathione, the body's master antioxidant, is built from three amino acids, and the two most often in short supply with age are cysteine (supplied by NAC) and glycine, so providing both (GlyNAC) raises glutathione more than either alone.

What to do

A promising combination for antioxidant defence and healthy aging, studied at gram-level doses of each. Introduce it gradually, take NAC away from any nitrate heart medication, and check with a clinician first if you have a health condition or take regular medication.

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N-Acetyl Cysteine
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Glycine
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Common questions

Can I take N-Acetyl Cysteine and Glycine together?
Take together. A promising combination for antioxidant defence and healthy aging, studied at gram-level doses of each. Introduce it gradually, take NAC away from any nitrate heart medication, and check with a clinician first if you have a health condition or take regular medication.
Why do N-Acetyl Cysteine and Glycine interact?
Glutathione, the body's master antioxidant, is built from three amino acids, and the two most often in short supply with age are cysteine (supplied by NAC) and glycine, so providing both (GlyNAC) raises glutathione more than either alone.

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Educational use only, not medical advice. Interaction risk depends on dose, your health, and any medications. Always consult a qualified clinician, especially if you take prescription drugs or are pregnant or nursing.