I just started taking 35 mg Phendimetrazine yesterday. I take one at 10 am and one at 4 pm, plus I'm trying to stat on a 12-1500 calorie food intake. I'm going to a weight loss clinic here in okc, my question is why did they tell me it was okay to drink caffeine at least once a day and what I'm reading on line states that you should cut it out all together??? I have been having a headache off and on since I startede, but afraid to drink caffeine....any help would be great! Thanks!