l carnitine bodybuilding side effects How to Take L-Carnitine Correctly to Boost Your Training L-Carnitine Side Effects & Safety:

Although the body can produce small amounts naturally, dietary intake may not always be sufficient, especially for vegetarians or people with specific health conditions

The Potential Functions and Benefits of Acetyl L-Carnitine What is Acetyl L-Carnitine

So, the bulk of the current scientific evidence says that, unfortunately, L-carnitine probably isnt going to improve your exercise performance

La carnitina es transportada hacia la clula muscular por el transportador OCTN2, y se demostr que con la suplementacin de carnitina en presencia de altas concentraciones de insulina se puede obtener un aumento del 15% en la carnitina muscular (1)

For that, you need pure, 100% L-Carnitine