N-Acetyl-L-carnosine, or N-Acetylcarnosine (abbreviated NAC) is a dipeptide. It is similar to carnosine but more resistant to carnosinase degradation thanks to the addition of an acetyl group.N-Acetylcarnosine is a natural dipeptide containing histidine, which is the main source of L-carnosine in pharmacology. N-acetyl Carnosine/N-Acetylcarnosine is an effective ophthalmic drug with the potential to be used for human cataract.N-Acetylcarnosine is composed of the root word carn, meaning flesh, alluding to its prevalence in animal protein.A vegetarian (especially vegan) diet is deficient in adequate carnosine, compared to levels found in a standard diet.
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