Carnitine supplements can still be beneficial, but only in populations that might suffer from carnitine deficiencies, particularly those on a vegan or vegetarian diet, those on an extreme calorie deficit, or the elderly.

肉毒碱补充剂仍然是有益的，但只适用于可能患有肉毒碱缺乏症的人群，特别是那些素食者，那些极度缺乏热量的人，或老年人。