This is of particular risk in chronic recreational users of nitrous oxide
No research on combination
L-carnitine, they concluded, appeared to be safe, well-tolerated and positively influenced exercise capacity and respiratory muscle strength in COPD patients. The National Institutes of Health (NIH) According to the NIH, Supplements do not appear to increase the bodys use of oxygen or improve metabolic status when exercising, nor do they necessarily increase the amount of carnitine in muscle. Although the NIH says that, as a therapy, carnitine is generally safe and well tolerated, carnitine supplements can lead to some unwanted effects
Energy can be felt almost immediately, and patients leave the clinic feeling like a different person
So participating in a clinical trial is a gamble: it may help, it may not help, or it may even cause some unpleasant side effects
You dont need to worry about anything other than enjoying yourself