Valium (diazepam) is among the most widely used and abused benzodiazepines. Valium has a faster onset of action compared to Klonopin, Xanax, or Ativan and the peak plasma concentration of Valium occurs between 30-60 min on healthy adults. Valium lasts longer than most other benzodiazepines. The half-life of diazepam and its active metabolites (nordiazepam, oxazepam, and temazepam) can last for 120hrs. Due to its long duration and less significant ups and downs, Valium is extremely effective for alcohol, benzodiazepine, or barbiturate withdrawal.
Unlike Ativan, Klonopin, and Xanax Valium is not very potent.
10 mg diazepam = 0.5 mg Xanax = 0.5 mg Klonopin = 1 mg Ativan.
Officially the maximum dose of Valium is 40 mg/day although in some situations larger doses are given.
It is impossible for anyone to know what you may experience if you take Valium or any other drug. Some people fall asleep, some act drunk, some feel nothing, and so on. I have taken Valium and it helped my anxiety, made me a bit sleepy at first, and that is it- no buzz or euphoria. It sounds like you “enjoyed” your prior experiences with benzodiazepines so you will likely have a similar effect. If you have used benzodiazepines a lot you may not feel much from Valium except at an extremely high dose due to its low potency. Valium also tends to cause more tiredness. For the most part the difference in effects is due to the dose, the duration of action, and onset of action.
I certainly won’t give you the “drugs are bad” lecture but make sure you know what you are dealing with. If you chose to use any medication make sure you know the dose and any potential drug interactions with other substances you may take. Generally people don’t typically become addicted to benzodiazepines unless they abuse other drugs but the small percent of people who do become truly addicted to benzodiazepines alone have a terrible time. And since high dose/long term use leads to physical dependency in up to 1/2 of users it can be particularly dangerous because withdrawal can be life threatening.