This NYTimes article about Nike’s Oregon Project is interesting, and I’m looking forward to catching up on the story as reported by other outlets. This jumped out at me:
Even though L-carnitine is not a banned substance, the method of infusion used by Dr. Brown was prohibited, antidoping officials believe. Antidoping rules prohibit “infusions and/or injections of more than 50 mL per 6 hour period except for those legitimately received in the course of hospital admissions, surgical procedures or clinical investigations.
The method of administration should never be ignored. In this case, it makes the difference between carnitine being a legal supplement versus a banned substance.