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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Approximately 500,000 babies are born each year in the United States to teenage mothers.