This site has everything you’d ever need regarding getting enough vitamins through dietary supplements. There are various issues to consider when using vitamin supplements. One of the most basic ones is which vitamins you’re going to take, such as Vitamin A, B-complex, C, K, and others.
There are also other issues such as the amount of the vitamins you need. This is based on factors such as your dietary needs, health conditions, and so on. For example, if you’re a vegan you might want to consider supplements such as iron since it’s tougher to get certain vitamins such as B-complex, and minerals such as iron. There are other issues including the brand, quality, and others.