Hemofarm Belbien Ambien is a short-acting oral medication that is widely used to treat sleeplessness that is caused by anxiety. It belongs to the category of sedative-hypnotic Rx. Hemofarm Belbien Ambien is a fast-acting sedative for the treatment of insomnia. It has the same active ingredient as Ambien, which is zolpidem tartrate, but it’s typically prescribed for shorter term use. Hemofarm Belbien Ambien is also available in an extended release form, which means that its duration of action can last up to 12 hours.