Benzo's differ in how fast action of onset ,there are three types short acting ,intermediate acting ,and long acting , the types generaly used for anxiety would be Xanax(Alprazolam), or Ativan (Loraepam). For something like panic attacks/ disorder Klonopin(Clonazepam) ,or Valium(Diazepam) are longer acting and stay in the bloodstream longer , now Xanax is the quickest onset when taken orally that doctors in the US use ( sometimes they will use Ativan sublingual to speed it Up) but rule of thumb with these drugs the faster the onset the more addiction potential it has , there are non FDA approved drugs in Mexico and Europe that are known for "date rape drugs" like Rhohynol or "Rophies" since u don't have any experience administering or using them I will leave those drugs to someone that does . There is also the sedative hypnotic Restoril (Temazepam) used because its intermediate drug not fast onset ,but not slow and it stays in the blood ,so of known Bezo's it's the drug of choice for both people who can't fall asleep ,and those that wake up and can't fall back to sleep , similarly is Dalmand (Flurazepam) ,many doctors if you ask them about Dalmane won't even know if it's still made ,if they don't routinely prescribe or use a drug they forget about it .there is a quicker acting injectable benzo that is mostly limited to prehospital care providers or in hospital use Versed (Midazolam) they use it to terminate seizures in status epilepticus and sometimes for anesthesia induction . I am sure i am forgetting something but its been many years since my last recertification requirement so i have lots of information rolling around in my head getting rusty ( yeah i know about Tetnus just pass the Chlorpromazine and barvituares and we will be fine ) .

Now I will mention this just for Historical reference Diprivan(Propfol) is not a benzo sedative/hypnotic ,and is not appropriate to be used as such,it is an anesthetic rendered to as "Milk of amnesia" and is used for surgery ,The Late Performing artist Michael Jackson died due to using it instead of a benzo .