ARTAH Metabolic Fix Supplement Berberine, L Carnitine, Chromium For Metabolism & Energy 60 Capsules, 30 Day Supply Acetyl L Carnitine Inlife Berberine with Milk Thistle & Turmeric + Fat Burner with L Carnitine & Green Coffee Botanical Combo, Vegetarian Capsules Berberine Phytosome Women's Metabolic Support Supplements Barimelts 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 ARTAH Metabolic Fix Supplement Berberine, L Carnitine, Chromium For Metabolism & Energy 60 Capsules, 30