Side effects Other than drowsiness and poor coordination, the side effects of commonly prescribed doses of tranquillizers are relatively mild. In some people, an increase in hostility and irritability, and vivid or disturbing dreams can occur. A variety of uncommon side effects can occur, including skin rash, headache, and impaired sexual function. Tolerance and dependence Even at prescribed doses, tolerance can develop to the anti-anxiety and other effects of the tranquillizers. As a result, over a period of time patients will often increase the dose they take.
Some patients develop psychological dependence when taking prescribed doses of tranquillizers.
They crave the drug and feel a compulsive need to continue taking it. Anxiety and even panic can occur if it is stopped. These symptoms can be confused with the problem for which the drug was originally prescribed. Using tranquilizers for extended periods, instead of exploring alternate drug-free means of coping with stress, can contribute to the development of psychological dependence. Patients taking tranquillizers can also develop physical dependence and experience withdrawal symptoms if use is stopped abruptly.