Occasional sleeping pills do not have much effect on the body. Patients who take sleeping pills and get up at night or in the early morning may experience a certain degree of dizziness, heavy head and light-headedness, similar to the reaction of a hangover. The actual fact is that you can find a lot of people who have been taking sleeping pills for a long time, and they will not be able to respond to you. The main reason is that sleeping pills inhibit the functional activity of the cerebral cortex and play a sedative and tranquilizing role. 2, if you take sleeping pills for a long time, it will also lead to drug dependence, tolerance, and easy rebound of symptoms after stopping the drug.