When it comes to vitamins, it's essential to be aware of potential interactions. Taking multiple vitamins at once is generally safe, but there are some combinations that should be avoided. B vitamins work together in a B complex supplement, and vitamin C helps the body absorb more iron from food and supplements. Vitamin K and calcium both help with skeletal and heart health, but if you take a traditional anticoagulant such as warfarin, only the small amount of vitamin K contained in an MVM can reduce its concentration.
High doses of vitamin C can reduce the amount of vitamin B-12 that the body absorbs and metabolizes. Studies show that taking these two supplements at the same time can reduce the amount of vitamin B-12 you receive. Water-soluble vitamins can be taken together without food, and fat-soluble vitamins can be taken together with foods that contain healthy fats. Some providers suggest combining iron with vitamin C to maximize absorption, but the jury is still out on this one.
A small study of 60 male patients with coronary artery disease found that a combination of omega-3 and vitamin E had beneficial effects on serum insulin and insulin resistance. While both of these B vitamins are important, taking too much folic acid or folate can mask the symptoms of a vitamin B12 deficiency. In addition, some vitamins can interfere with the effectiveness of medications and even exacerbate side effects. The best time to take a vitamin pill is a moment you'll remember day after day. Foods that are rich in vitamin A should only be eaten once a week to avoid consuming them too much.
When it comes to taking vitamins, it's important to be aware of potential interactions and to take them at the right time for maximum absorption.