"i have tried both diethylpropion and phentermine. the phentermine worked very well! i lost 40lbs with almost no exercise at all. but i experienced dry mouth and the jitters. on the downside i loved snacking and its usually after dinner or right before. i was taking 30 mg and i had no cravings for anything! i loved it! so  i am now on the diethylpropion 25 mg immediate release which is not cutting it and i talked to my doctor and he increased the dosage to taking 50 mg a day and still not doing the trick just yet. so its my cravings that are bad especially around my cycle. i will be maybe trying the 75 mg."