What part of the brain does xanax work on

Also Flurazepam, do they work on the opiate receptors, if not why are they so addictive?

Alprazolam, like other benzodiazepines, binds to specific sites on the GABAA gamma-amino-butyric acid receptor. When bound to these sites, which are referred to as benzodiazepine receptors, it modulates the effect of GABA A receptors and, thus, GABAergic neurons. Long-term use causes adaptive changes in the benzodiazepine receptors, making them less sensitive to stimulation and less powerful in their effects.

Withdrawal and rebound symptoms occur commonly and necessitate a gradual reduction in dosage to minimize withdrawal effects when discontinuing.

Flurazepam and xanax are both benzodiazepines, and have nothing to do with opiate receptors. Also, the receptors that benzos work on are found throughout the body, not just in the brain. That is one of the reason withdrawals are so bad - your entire body is effected.

Unfortunately, xanax does not work on the part of the brain that reminds you not to end sentences with a preposition.