I agree with AlmostMe, your doctor doesn't get it. He should be able to ramble off (or at least look up while you are there) the side effects of something he's prescribing.
I am on a medication that increases your appetite and my doctors begged me not to gain a pound as it would be detrimental to my health (but the benefits of the medication outweighed the risk of gaining). I tried to make sure I didn't gain anything while taking it, so instead I have lost over 100lbs to benefit my health all while taking this medication. My doctors couldn't believe it.
I am going to google those drug names and see if I can help you.