will l-carnitine help with breathing problems L-Carnitine: Benefits, Uses, and Side Effects Role of L-carnitine in Cardiovascular
Description
The potential of L-carnitine to reduce and eliminate free radicals is related to the suppression of hydroxyl radical production in a chemical reaction, the Fenton reaction, possibly through chelating the iron ions necessary for the hydroxyl radical generation (71)

until more research has been analyzed, its often recommended not to substitute one form of carnitine for another

T., Russell, M

Anabolic steroid-induced hypogonadism