If people take this capsule too much, people are likely to become dependent, and a few patients will have diarrhea and rash. Of course, the probability of this happening is relatively low. Taking vitamin B complex capsules reasonably can enhance people's physique. If people's hair loss is very serious, it is also very appropriate to insist on taking vitamin B complex capsules. This capsule can also protect the nervous system. If your child is very picky about food, you can also take this capsule on the advice of a doctor. This kind of capsule must pay attention to the preservation method, and it is more suitable to store it at room temperature in the dark. If the preservation method is not correct, it is easy to deteriorate the drug. What side effects does vitamin B capsule have? It can be seen from the article that if people take this capsule in excess, it may cause some adverse reactions, and diarrhea, rash or nausea and vomiting are very common. But if people take it in moderation, it can prevent fatigue, ease their mood and of course enhance their resistance.