The hypocaust system. The hypocaust system (hypocaustum in Latin) was a heating system used in (wealthy) Roman homes and Roman baths, and the closest thing to central heating today. The hypocaust was a system that circulated hot air under the floor and surrounding walls. Hypocaust construction
CDC: Nearly 9 millon Americans use prescription sleep aids. Nearly 9 million U.S. adults take prescription sleep aids, with use more common among those who are older, female, white and better educated, according to the first government survey of its kind released on Thursday.
Over The Counter Sleeping Pills. These sleeping pills contain antihistamines to induce drowsiness and are effective when used occasionally. Over-the-counter sleeping pills do not require a prescription. Examples of these sleep medications are Diphenhydramine and Doxylamine.Nonbenzodiazepine Hypnotic Medications. These sleeping pills are available by prescription only and are best suited for short-term or occasional use.he FDA concern over the side effects of common sleeping pills is based on the fact that many drug companies have only tested the short-term side effects of sleeping pills, as well as the fact that some of the potential risks of these sleep aids are not well addressed on drug labels.