5 Vitamin and Supplement Combinations You Should Avoid, According to Dietitians

By Hannah Chenoweth – Good Housekeeping

Taking all your vitamins and minerals together seems like an easy way to add some wellness to your regimen, right? While “all-at-once” is a convenient approach, it isn’t necessarily optimal, according to doctors and nutritionists.

Some vitamins and minerals can counteract each other, reducing their effectiveness and potentially causing side effects like nausea, diarrhea and constipation. To get the full benefits from your supplements (and let’s be honest, your money), it’s important to understand which combinations to avoid.