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Description
This is where the acetylated form, ALCAR, distinguishes itself
They both have a lot to offer

Carnitines exist either as free carnitines or as acylcarnitines (Figure 1 A)

While both forms can be used as a supplement, ALCAR is often preferred due to its ability to cross the blood-brain barrier allowing it to interact with nerves in the brain, and also donate its acetyl molecule, a key step in neurotransmitter formation, required for healthy brain activity

Lutz Schomburg, Charit Universittsmedizin Berlin, Germany Updates Copyright 2023 Wang, Li, Li, Cui, Zhao and Liao

PMID 11854529