There are a variety of drugs that fall into the class of drugs called Benzodiazepine. Some of those would be Xanax, Valium, Halcion and a vast variety of other common and uncommon drugs used around the world. This particular class of drugs has five different effects on people who take them. These effects are hypnotic or those drugs that can make a person sleepy, anxiolytic effects which are drugs that help with anxiety, anti seizure which of course will help reduce seizures, then there are those that are used as muscle relaxants and finally there are the amnesic effects that are drugs that interfere with long and short term memory. All the drugs in the Benzodiazepine class can cause what is known as Benzo Withdrawl Syndrome.