This is a test of commonsense. Complete the next sentence:

How to take l carnitine
Boost low carnitine levels.
When the body does not absorb or make sufficient carnitine, doctors will prescribe oral l-carnitine.
Carnitine levels may be low because of many reasons.
Genetic disorders are the most common, but medical procedures such as hemodialysis also drain the body of l-carnitine temporarily. Vegetarians or anyone who is on a strict diet may also have low carnitine levels.