[header] How to prevent stomach upset from vitamins [title] Ask your doctor if you need to take vitamin supplements if they upset your stomach. [step] If you are eating a well-balanced diet, she might advise you that taking extra vitamins is not necessary. Consult your doctor about alternatives if the problem of stomach upset from vitamins persists. 
[title] Determine the correct type and dosage of vitamins. [step] This will help you not only avoid harming your stomach, but also best help your body.