Free Form Amino Acid. Gluten Free. Twinlab L-Carnitine capsules contain no synthetic D-Carnitine or DL-Carnitine. D-Carnitine and DL-Carnitine are less effective than L-Carnitine. D-Carnitine and DL-Carnitine are not recommended because of their adverse physical side effects. Well tolerated by the most highly allergic individuals.
"This is a great product for energy and very good for the heart. I'm 43 and have been taking this for several years and take it with food as I can't tolerate it on an empty stomach. Works just fine. Without taking this, I am fatigued by the afternoon. This keeps me energetic until bedtime."
"I've purchased other brands and none is better than Twin-lab L Carnitine. I take it in the morning and before my workouts and the energy and calorie burning is incredible. When I don't take it I feel very tired. I take it for life. Also the capsules do not explode due to high temperatures. I live in the caribbean and other brands the capsule explodes or is damaged due to moisture. This is to me the best."