Bioclinic Naturals Acetyl L Carnitine 120Vc Natural Chemist Health Veda Organics L Carnitine L Tartrate, 1000mg Pre Workout Supp Benefits Of L Carnitine Supplementation Plixlife L carnitine, ., ., ., Disclaimer: I do NOT encourage the use of steroids or substances not approved for human use., Always consult a medical professional before considering any enhancement protocol. L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage Oxyenergys L Carnitine. My go to pre post workout supplement. Pre workout I usually take it before my workout session for energy production. Post workout Ill take it the day after my workout