medication for people with sleeping disorders.
If one is used, it may give you only a slight dilluted feeling. However, the more you use, the more dememnted you feel. It doesn't make you feel high, but it makes you feel sedated
like it should. It also kills off your concience and whatever is fun has no consequence; IE throwing fircrackers at people, setting things in your own room on fire, tackling
hard furniture, putting shit over your head
around your house, etc. Afterwards it is rather hard to remember what you had done. In fact you may have to just see the damage you did to even vaguely remember anything.
If more than 4 are taken, it virtually erases your memory of what you had done the day/night before. Even seeing what you had done wouldn't bring up the inexisting memories.
There are no real signs of a person being on Ambien, except that the person looks kind of sleepy. Which you will be, slightly.