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Taking medications by your clock - internal - Your Life - Brief Article

USA Today (Society for the Advancement of Education),  Jan, 2003  

Aspirin in the morning? Asthma medications at night? Your internal body clock could set the optimal time to take medications, suggests the Mayo Clinic Women's Health-Source.

In a 24-hour period, body functions vary. Your heart rate and blood pressure are especially low during deep sleep. Peak blood pressure occurs 12 to 24 hours after this low point. Heart rates vary five to 15 beats a minute over a 24-hour period. There are many other normal variations, which doctors refer to as circadian rhythm.

Researchers in chronopharmacology and chronobiology are examining circadian rhythm in hopes of finding ways to utilize this internal biological clock for better health. Among others, studies are under way to determine the optimal times for patients to take various medications.

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