How do I know if I’ve had an adverse event?

Question

How do I know if I’ve had an adverse event?

OPSS Answer

“Adverse events” are unfavorable or unusual reactions/effects/illnesses that can occur with the use of some dietary supplements, just as they can with over-the-counter and prescription medications. Examples of adverse events include anxiety, headaches, increased blood pressure, vision problems, and stroke. Such adverse events may be due to one supplement taken alone or to combinations of supplements or to interactions between drugs and supplements. Be sure to listen to your body, pay attention to how you feel, and keep a written list of all prescription medications, dietary supplement products, and over-the-counter medications you may be taking. Tell your healthcare provider about any changes in your health status, particularly if you start to feel symptoms you did not experience prior to taking the supplement(s). It is always best to talk to a healthcare provider or dietitian before taking any supplements. To report an adverse event, or even if you suspect one, you can fill out a user-friendly form or call the number on the supplement label.

Updated 17 April 2014

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