I have been taking 7.5 mg hydrocodone for my chronic pain. I recently had my shoulder operated on, for a while the doctor gave me 20mg endo's then cut me down to 5 mg. I told him i wanted the 7.5 hydrocodone, he said that the endo was stronger. I do not believe this. I need to take 2 endo's to take the pain away, when 1 7.5 will do the job. Someone is blowing smoke here.