Check Your Medicine Cabinet
Karen Baker, BSc, DC

Your medications (prescription or over the counter) may change the way your body responds to exercise, sometimes in ways that can be dangerous. If you take any medication regularly, check with your pharmacist to see if it can cause problems. A few to watch out for:

ANTIBIOTICS: A class of antibiotics called fluroquinolones (e.g. Ciprofloxacin, Sparfloxacin, Levofloxacin), often prescribed for bronchitis, urinary tract infections and intestinal infections, may increase your risk of tendinitis or a tendon rupture. If the antibiotic you’re taking belongs to this class, ask if a substitute could work as well for you.

ANTIHISTAMINES (e.g. Diphenydramine, Cyprohepadinie) work well to diminish allergy symptoms; however, they also reduce your ability to sweat, leaving you vulnerable to overheating during a workout. Some also cause drowsiness or slowed reflexes, which could lead to injury. Wait at least half a day after taking such drugs to do activities that require physical or mental coordination or fast response time, such as using gym machines.

DIURETICS (such as Furosemide, Metolazone) used to control high blood pressure, flush fluid from your body. This can increase the risk of dehydration during exercise; especially since exercise suppresses the thirst response. Combining diuretics with exercise can be especially dangerous for older people with heart disease. It is important to always drink plenty of fluids when exercising, but if you are taking one of these medications pay particular attention to your fluid intake.

IBUPROFEN (generic), sold under several brand names (i.e. Advil, Motrin, Nuprin) is often taken to reduce pain and inflammation. This type of painkiller accelerates dehydration by reducing blood flow to the kidneys. Acetaminophen (Tylenol and others) does not have this effect. Aspirin and Naproxen do, but to a lesser degree. For you pill poppers out there, be aware these drugs are not completely harmless and should be taken with caution.