Is your supplement safe with your medication?
Supplements feel harmless. They are sold without a prescription, marketed as natural, and sitting on the shelf next to vitamins. But "natural" does not mean "no interactions."
St. John's Wort, one of the most popular herbal supplements, can reduce the effectiveness of birth control pills, antidepressants, blood thinners, and HIV medications. Grapefruit (yes, the fruit) interferes with over 85 prescription drugs by blocking an enzyme your body needs to metabolize them properly.
Fish oil, calcium, magnesium, turmeric, garlic supplements: they all have documented interactions with common prescriptions. The risk is not always severe, but it is real and worth knowing about.
The problem is that most people do not mention supplements when their doctor asks "what medications are you taking?" And doctors rarely ask specifically about supplements. This gap creates a blind spot in your care.
Our Interaction Checker covers supplement-drug interactions, not just drug-drug pairs. And for deeper reading on how supplements affect your body, our partner site Health Britannica has a growing library of evidence-based wellness content.
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