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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.