Click Here: https://bigpharmausa.com/ativan-vs-valium/ Ativan and Valium both have their medicinal name. Ativan is known as lorazepam, whereas Valium is known as diazepam; both help to treat anxiety. The only difference is that Ativan acts faster than valium; Ativan stays for a short time in the human body, whereas valium stays for a long time in the human body.