BD L-Carnitine 200mgBD L Carnitine 200mg Injection in Pakistan Acetyl L carnitine, also known as acetyl carnitine or ALCAR, is another popular supplemental form of carnitine. It can be found throughout the central nervous system, where it plays a role in producing energy and produces the important neurotransmitter acetylcholine. Bodybuilders and other athletes often take L carnitine supplements to help improve exercise performance and muscular endurance, burn fat quicker