You can delete your history then disable history so YouTube won't store the videos you watch. Recommended videos are there based on other videos you've watched. Go to history and press or click where it says pause viewing history. I'd recommend to delete history before pausing it.
Ambien is the brand name for zolpidem, a drug that's used to treat insomnia. Insomnia is a sleep disorder that makes it difficult for you to go to sleep, stay asleep, or both. Ambien is in a class of drugs called sedative-hypnotics.
Ambien is also much more widely available and easily accessible than rohypnol, the drug usually associated with date rape. Ambien is an effective sleep aid and a huge money maker for its manufacturer. Most people take it as prescribed and treat their insomnia successfully with no problems.