Neither L Carnitine nor Berberine work like caffeine, yohimbine, or fat burners. They do NOT: Spike your heart rate Jack up your nervous system Cause jitters or crashes Mask L Carnitine 6000 Liquid (1000 ml) Extra High Dose with 6000 mg Pure L Carnitine per Daily Serving Amino Workout Drink Delicious Taste Vegan Wehle Sports (1000 ml, Cherry): Carnitine 3000 Shot, 60 ml, Strawberry, Pre Workout Shots Nutrend.eu L Carnitine 3000 mg Ampules 25 ml Trec Nutrition L CARNITINE + GREEN TEA Mega Dose Fat Burner Fast Weight Loss When to Take L Carnitine for Optimal Training Benefits Transparent Labs