You could try another drug? You just need to keep trying but first take with your doctor, cold turkey is never good. Just because one worked great doesn't mean another can't be found or that it was the right drug for you.

You said he would work with you so maybe you could find one that isn't to high priced but works wonders for you! Plus, have you check out the drug discount drug card on here or if you meet any drug companies financial assistance programs?