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Tuesday, Oct 17, 2017
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Cilantro may counteract Coumadin

Q: You recently published a letter from somebody eating a lot of cilantro to control psoriasis. Before others try this approach, I want to offer a caution. My brother enjoyed using lots of cilantro in his salsa until he realized it is high in vitamin K. He needed a higher dose of Coumadin (warfarin) to get the same blood-thinning effect. A: Warfarin is an anticoagulant medication used to prevent dangerous blood clots that might cause heart attacks, strokes or other serious problems. It works by interfering with vitamin K, a natural compound that promotes blood clotting. Many foods (including broccoli, Brussels sprouts, kale, parsley and spinach) contain vitamin K. Eating more of these foods can indeed reduce effectiveness of warfarin and require dose adjustment.
Thank you for your warning. People on warfarin must always be cautious about herbs or medicinal foods. Our free Guide to Coumadin Interactions is available at www.PeoplesPharmacy.com. Q: When I stopped taking the antihistamine Zyrtec, I started itching like crazy! My scalp, my arms, my neck and my legs all itch. I just want to cry. This awful reaction happened once before after stopping this allergy medicine. When I asked the pharmacist, he said it was unrelated. I just don't believe that. How long will this itching last? A: Hundreds of readers have reported experiencing uncontrollable itching after stopping cetirizine (Zyrtec) suddenly. Because this complication is not widely recognized, we are not surprised that your pharmacist assumed your symptoms were unrelated. Visitors to our website report that it can take several weeks for the itching to subside. Some suggest that vitamin C may help ease the discomfort during this period. Q: A few years ago, I started taking Ambien for a sleep disorder. One day, I drove my 7-year-old daughter to school in the morning after taking Ambien the night before. Luckily, the school was only a half-mile from my house. I didn't truly wake up until I was sitting in my car in the garage after returning home. I found out later that I had repeatedly driven into the curb. One of my tires was flat as a result. My daughter was so traumatized by the incident that she wouldn't let me drive her to school again. I think this drug is dangerous. I got even more than a full night's sleep, but I still turned into a dangerous driving zombie in the morning. A: The Food and Drug Administration has received more than 700 reports of impaired ability or road traffic accidents from people who had taken zolpidem (Ambien). As a result, the agency has recommended lower doses to avoid just the sort of risky situation you experienced. If you would like to know more about the pros and cons of popular sleeping pills plus practical alternatives, you may want to listen to our interview with two of the country's leading sleep experts. Show No. 878, Solving the Sleep Dilemma, can be found at www.PeoplesPharmacy.com. New research suggests that older people who rely on sleeping pills may be at greater risk for developing dementia (BMJ online, Sept. 27, 2012). This, added to the risk of morning hangover, makes such drugs less desirable for getting a good night's sleep. Q: I want to pass along a tip that I've been using for 20 years. I put about 2 teaspoons of cinnamon in my coffee filter and then put coffee grounds on top. I get the benefits of the cinnamon, and it cuts any bitterness from the coffee. I turned all my family and friends on to this, and my mother-in-law was able to go off the diabetes medicine that she'd been on for years! A: For years, researchers have been investigating the use of cinnamon to keep blood sugar from rising too quickly after a meal. In a three-month placebo-controlled trial, cinnamon capsules significantly reduced HbA1c in Type 2 diabetics (Diabetic Medicine, October 2010). This is a measure of blood sugar over several weeks, not just at one point in time. We discuss details of using cinnamon and other nondrug approaches to help control blood sugar, along with the pros and cons of medications, in our brand-new Guide to Managing Diabetes. It can be downloaded for $2 at www.peoplespharmacy.com. Q: I am plagued with ugly cold sores. You wrote once that buttermilk might help. Do you drink it as a preventive measure? Or do you apply it topically on the cold sore to make it heal faster? I know that sounds odd, but people suggest the craziest things to get rid of these awful sores. I'd really like advice on preventing them. A: Several years ago, we received a letter from a man whose pharmacist told him to drink buttermilk to avoid cold sores on the lips. Another popular approach is the dietary supplement L-lysine. Many readers report that 500 milligrams daily can prevent outbreaks. Unfortunately, there isn't much recent research on this approach, so we don't know whether it would hold up in a placebo-controlled trial. Q: I read your column about gout and tart cherries. Celery seed extract works better and quicker. I take two capsules a day, morning and evening, with food. If my gout flares up, I double the dose. The active ingredient is 3-n-butylphthalide, or 3nB for short. A: Herbal expert James Duke, Ph.D., has been singing the praises of celery seed's healing power for decades. We're glad it works so well for you.

Joe and Teresa Graedon answer letters from readers. Write to them at www.PeoplesPharmacy.com.
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