l-arginina vs l-carnitina Effect of L-carnitine (LC), L-arginine (L-ARG), N-nitro-L-arginine L-Carnitine and Creatine are both
Description
Interactions with Prescribed Medication L-carnitine may interact with certain medications
Histopathology of Preclinical Toxicity Studies

Page has mentioned that the title Yoga for Regular Guys might have limited his target audience to just men and that is a fair statement

Conversely, several studies have reported beneficial effects of B vitamin supplementation