Know the Science: How Medications and Supplements Can Interact
Interactions With Over-the-Counter Drugs
When people think about drug interactions, they often think about prescription drugs.
But some drugs that are available over the counter without a prescription can interact with supplements, too.
If you’re considering taking both an over-the-counter drug and a dietary supplement, it’s a good idea to talk with your health care provider or a pharmacist about possible interactions.
Which of these over-the-counter drugs may interact with herbal supplements?
Pseudoephedrine (a decongestant)
All of them
Yes, but this isn’t the only one. Try again.
You’re right. A variety of herbs may interact with aspirin to increase the risk of bleeding. Concentrated green tea supplements interact with pseudoephedrine. St. John’s wort interacts with fexofenadine (Allegra).