Safety
Safety Considerations When Combining Supplements and Medicines
'Natural' doesn't mean safe with every medicine. Some supplement–drug combinations are dangerous.
By the Horsefil Research & Buying Guide editorial team · Published
Why interactions happen
Supplements can change how your body absorbs or processes medicines, making them stronger or weaker.
A high-risk example
Products with hidden PDE-5 inhibitor drugs, found by the FDA in some sexual enhancement supplements, can cause dangerous blood-pressure drops with nitrate heart medicines.
Staying safe
- Tell every doctor and pharmacist about all supplements you take
- Use one pharmacy where possible
- Look up herbs on MedlinePlus before use