According to a popular website for prescriptions, Ambien should only be used for short term insomnia or sleeplessness. The site information says that it should only be used for about 10 days.

The prescription information on the Ambien site also says that if you were using it for 10-14 days you should not stop taking it suddenly. The documentation does not go into details- it just says that stopping quickly might make you feel badly whether you were using it for insomnia, a sleep aid or anything else.

Well, I did not find a direct comparison between amien and sonata, but the information offered on each drug helps. Oh ya, the same website does sell Sonata too. Ordering online like that is convenient and there is a minimal shipping charge. However, I am not sure what the shipping cost is per order.