L-carnitine capsules will cause diarrhea if taken in excess, but as long as they are taken normally according to the instructions, there is no need to worry about diarrhea. Therefore, although the effect of L-carnitine capsule is very good, it must be taken in moderation according to the instructions. L-carnitine capsules will also cause dizziness, chest tightness, insomnia and other adverse reactions after being taken by a few people. L-carnitine capsule can lose weight through fat metabolism and burning fat. After taking it, you must exercise properly and drink water reasonably within 1-2 hours, so as to better control your weight. If you don't pay attention to your diet, you will gain weight. Does L-carnitine capsule have side effects? It can be said that as long as it is taken normally, there will generally be no side effects. After all, L-carnitine capsules are products that promote the conversion of fat into energy, and the side effects will be relatively small. But if you want to lose weight, you must cooperate with proper exercise, have a balanced diet and avoid malnutrition.