Why does sleeping pills cause some people to have energy instead of drowsiness?

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jerichorayel eNotes educator| Certified Educator

Sleeping pills (hypnotics) are psychoactive drugs which induces sleeps to people. It is used to treat insomnia or during medical operation. Usually patients who underwent this medication often feel refreshed and have renewed energy. These pills react with the receptors in the brain that induces sedation, relaxation on muscles, removes anxiety and induces anterograde amnesia. 

Generally sleeping pills do not work on patients for certain reasons. Patients might be allergic to the drug, immune to it, or might have taken it in large amount (over dosage). Researches said that the some effects of the sleeping pills don't actually make you energetic, it is just the body is too immune to the drug that it does no effect at all. On the other hand, they are looking at the probability that some of the sleeping pills (benzodiazepine) over dose do not actually cure insomnia rather worsening it along with other side effects such as headache, diarrhea, heartburn, dry mouth, anxiety, aggressiveness and irritability.

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