Choosing a multivitamin: questions to ask first

Start with your needs

A multivitamin contains a combination of vitamins and minerals, but products differ. It cannot replace a varied diet, which supplies fiber and other beneficial components as well as nutrients.

People who have limited food intake, avoid certain food groups, or have particular medical or life-stage needs may benefit from supplementation. A clinician can help decide whether a general multivitamin, a specific nutrient, or dietary changes make sense for you.

More is not always better

Check the serving size and amounts on the label. A high-dose product can increase the chance of getting too much of some nutrients, particularly when combined with other supplements. Do not assume that a product marketed for energy or immunity is necessary for your health.

Check interactions

If you take warfarin, speak with your prescriber before starting or changing a supplement containing vitamin K. Changes in vitamin K intake can affect your anticoagulant treatment. Share all supplement labels with your clinician or pharmacist.

Questions for your visit

• Do my eating habits or health conditions suggest a nutrient gap?
• Could this supplement interact with my medicines?
• Am I duplicating nutrients from other products?
• Would testing or a more specific supplement be appropriate?

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General education only. This information does not replace individualized medical advice, diagnosis, or treatment. For an emergency, call 911.