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Glycine is an amino acid. The body can make glycine on its own, but it is also consumed in the diet. Sources include meat, fish, dairy, and legumes.

Glycine is a building block for making proteins in the body. Glycine is also involved in transmitting chemical signals in the brain, so there's interest in using it for schizophrenia and improving memory. A typical diet contains about 2 grams of glycine daily.

People use glycine for schizophrenia, stroke, memory and thinking skills, insomnia, and many other purposes, but there is no good scientific evidence to support most of these uses.

NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
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  • Schizophrenia.  Oral glycine may improve negative, but not positive, symptoms of schizophrenia when used as adjunct to therapy with typical antipsychotics in patients resistant to monotherapy. However, glycine does not seem to provide additional benefit when used with clozapine.
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When taken by mouth: Glycine is possibly safe for most people when taken in doses up to 6 grams daily for 4 weeks. It's usually well-tolerated. Some people might have mild side effects such as stomach upset.

When applied to the skin: There isn't enough reliable information to know if glycine is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: There isn't enough reliable information to know if glycine is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.

Clozapine (Clozaril)

Interaction Rating=Moderate Be cautious with this combination.

Clozapine is used to help treat schizophrenia. Taking glycine along with clozapine might decrease the effects of clozapine. It is not clear why this interaction occurs. Do not take glycine if you are taking clozapine.

There are no known interactions with herbs and supplements.

There are no known interactions with foods.

Glycine has most often been used by adults in doses of 3 grams by mouth daily for up to 24 weeks. Speak with a healthcare provider to find out what dose might be best for a specific condition.

Acide Aminoacétique, Acide Amino-Acétique, Aminoacetic Acid, Athenon, Free Base Glycine, G Salt, Glicina, Glycine de Base Libre, Glycocoll, Glycosthene, Iconyl, L-Glycine, Monazol.

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