First, why are you on these meds? also how old are you? Yes, as Hanna put it, you can get rid of all your meds with flushing and good diet. Ambien is simple to get rid of. Start taking melatonin, starting with 3mg, if that helps then you can drop Ambien. Also take a supplement called 5HTP, but do ask your doctor or read online if it can be combined with your meds.
The other thing is that you can flush away, but getting rid of meds will be a long gradual process.
The other thing you can do is to eat raw foods only and lot more green juices.
After you do get rid of your meds, you can fast with water only.
Please check out Dr. Joel Fuhrman's website. He has helped a lot of people. If you live in NJ you can even see him.