Consumer Report: Risky Drug-Supplement Interactions

We take $300 billion worth of prescription drugs a year. And an additional $26 billion worth of dietary supplements. Combining the two may be hazardous to your health. Consumer Reports says that some supplements can change the effectiveness of certain prescription drugs, and some can increase the likelihood and severity of side effects.

For example:
* Glucosamine can interact with the blood thinner warfarin and may increase the risk of bleeding.
* St. John's Wort can lower the effectiveness of oral contraceptives.
* And if you regularly take the supplement red yeast rice along with Lipitor or another prescription cholesterol drug, it may increase your risk of kidney or liver damage over time.

Consumer Reports says that when you're getting a prescription, ideally you should talk to your pharmacist about any supplements you're taking, and check whether there is a problem combining them. But when Consumer Reports sent anonymous shoppers into 20 pharmacies in five states to ask whether there was a potential problem taking Lipitor with red yeast rice, many pharmacists didn't know. Twelve of the 20 times, pharmacists gave incorrect or fuzzy advice. On two occasions, they actually recommended taking the combination.

Consumer Reports advice: In addition to talking to your pharmacist, you also want to consult with your doctor before taking any dietary supplements along with your prescription drugs.

Consumer Reports has put together a list of nine top-selling herbal supplements and some common drugs that may interact with them: www.consumerreports.org/health/natural-health/beware-of-risky-herb-drug-combos/risky-herb-drug-combos.htm.


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