This doctor's behavior is totally unacceptable. You have the right to know what you can expect from any drug he prescribes--any side effects, how it might help you. Also, usually when prescribing a new med, doctors will give you samples for the first few weeks because if there's a problem with the drug, you will have wasted good money and may need to throw the remainder away. The relationship between a therapist and patient has to be one of trust and if you feel that this doctor will not listen to you, or you'd be afraid to tell him things because of his possible negative reaction, you need to find someone else. If you have insurance, find out what other doctors they use in your area, or ask your primary care physician for advice. This is too important to just accept unprofessional behavior. Good luck.