Ambien is the commercial name for the chemical zolpidem tartrate, Imovane is the chemical zopiclone and both are sometimes referred to as 'z-drugs'. Sleep.
Someone taking Ambien long-term may suffer from delusions, including thoughts of suicide. The drug may also impair the general judgement and reasoning abilities of the user. Long-term use of Ambien can lead to the body developing an ever increasing tolerance to the drug, which may lead to dependence as more and more is needed to induce sleep. This also increases the likelihood of overdose. A decrease in libido is another effect of long-term use of Ambien.
Sleeping medications based on Zopiclone like Imovane (aka Zimovane) may cause the side effects of indigestion, constipation, nausea and vomiting, diarrhoea, increased appetite and heart palpitations.