How Much L Carnitine Per Day: Expert Guide The Science of Good Health Supplement of the week: L Carnitine!, This one doesnt just boost fat metabolismit can also improve recovery, endurance, and even brain function. If youre serious about performance and longevity, When Should You Take L Carnitine? MuscleTech Best Time to Take L Carnitine: Morning vs Evening for Better Fat Loss & Performance Taking supplements at the right time can make a huge difference in how well your body absorbs them. For example, magnesium is best taken an hour before sleep, as it helps relax