l carnitine tmao Comparison of short-term and long-term effects of peroral L-carnitine intake: clinical implications of elevated levels in cardiovascular complications Gut microbe-derived metabolite trimethylamine N-oxide

Clinical trials of supplemental L-carnitine have yielded consistently positive results in terms of self-reported physical and mental fatigue, ability to exercise, and improvements in body compositionparticularly when the study subjects are older and/or have documented carnitine deficiencies

Evidence of clinical pathology abnormalities in people with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) from an analytic cross-sectional study

Key Takeaway: Antioxidants are not just "health boosters"

Reduce if gastrointestinal symptoms remain severe after six or more weeks at a given dose level, if significant dehydration results from persistent vomiting or diarrhea, if heart rate increases beyond 15 beats per minute above baseline, or if the side effect burden is causing protocol abandonment

But even when you've got that dialed in, you might still be looking for ways to get an edge, which is why performance-enhancing drugs have always been part of the conversation