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Carnitine Turns On Testosterone In Muscles

January 06, 2012 1 min read

Carnitine Turns On Testosterone In Muscles

We’ve written previously about the amino acid Carnitine, how it helps spare muscle glycogen (your muscle’s primary fuel source during exercise) and helps to shift muscle metabolism towards fat burning, with the end result of improving exercise performance.

Another cool thing that Carnitine does is to ‘turn on’ testosterone receptors in the muscles. This makes them more efficient at using the hormone, and helps to promote muscle recovery after exercise. Testosterone helps to build and maintain muscle tissue in men and women.

When taken before exercise, it reduces muscle damage from the exercise and speeds up muscle tissue recovery.

This makes L-Carnitine an ideal supplement to take when you are doing a lot of high intensity work with shorter recovery periods in between training.

L-Carnitine is an amino acid that is found naturally in the body. Its perhaps best known for its ability to breakdown fats for energy production. Supplementing with l-carnitine may help your muscles recovery faster, helping you to get more out of your training.


Kraemer WJ, Spiering BA, Volek JS, et al. Androgenic responses to resistance exercise: effects of feeding and L-carnitine. Med Sci Sports Exerc. 2006 Jul;38(7):1288-96.
Kraemer WJ, Volek JS, French DN, et al. The effects of L-carnitine L-tartrate supplementation on hormonal responses to resistance exercise and recovery. J Strength Cond Res. 2003 Aug;17(3):455-62.
Karlic H, Lohninger A. Supplementation of L-carnitine in athletes: does it make sense? Nutrition. 2004 Jul-Aug;20(7-8):709-15.

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