l carnitine leg cramps 4Energy - L-Carnitine Drink - Sports Drink - WADA Compliant - 25 g CHO - Orange - 30 Servings helping you maintain top performance with full mental clarity and reduced fatigue L-Carnitine Side Effects & Safety:
Description
Different Types of L-carnitine Medicines Phytologix Lifesciences is the best manufacturing company in India that has a diverse range of nutraceutical products, including L-carnitine, that the company offers with combining the other nutraceutical drugs with complete quality assurance

I did not experience any side effects other then nausea but its definitely tolerable

Journal of the International Society of Sports Nutrition , 12, 30
doi: 10.1186/s12958-018-0323-4 [DOI] [PMC free article] [PubMed] [Google Scholar] 14

Standen BT, Peggs DL, Rawling MD, Foey A, Davies SJ, Santos GA, Merrifield DL (2016) Dietary administration of a commercial mixed-species probiotic improves growth performance and modulates the intestinal immunity of tilapia, Oreochromis niloticus

The underlying reason is the same as in primary carnitine deficiency
