l carnitine tab L-Carnitine, 30 Tablets and recovery L-Carnitine Tablets | MYPROTEIN™
Description
doi: 10.1093/eurjpc/zwac128 [DOI] [PubMed] [Google Scholar] 21

Topical use is the most problematic for breakouts, but taken as a supplement it might cause issues, too (we dont know for sure yet)

B: taken at the end of the study

Nature Medicine , 19(5), 576-585
