I am a big proponent of taking vitamins separately. There are many reasons for that and I will now list some of them:
Zinc or Zinc Aspartate?
Many people don’t look at the form of the vitamins in most multivitamin supplements. For example, zinc aspartate and magnesium aspartate are two often used forms of magnesium. Unfortunately, they break down into aspartic acid, which is certainly not the best thing for you. When buying your vitamins separately, you can choose exactly which form of which vitamin or mineral you want.
Most people don’t need doses as high as in most multivitamins, especially when it comes to B-vitamins. Although those vitamins are water-soluble and have no established toxic levels, Is taking 50 times the normal dose of a certain vitamin healthy? By normal dose, I mean the dose you can obtain from food. I don’t think so and don’t see a point in doing so. In addition, many multivitamins will have low levels of magnesium and vitamin D, which are both extremely important. A part of the reason why is cost – B complex vitamins are the cheapest and it is no coincidence that many multivitamins include more than 3000% RDA of them, especially if they are designed for athletes.
On the other hand, taking minerals together seems to cause no issues at all. I would advice against men taking iron supplements, as they have been linked to a variety of complications and liver problems. Women on the other hand menstruate, which is ho why get rid of excess iron in their body. The problem with getting your minerals from food is the depleted soil, especially in the US. Magnesium is a prime example of this and less than 30% of people get their RDI.