We called it vitamin M in the military. The doctors hand it out like candy. The daily dose on a container of Ibuprofen sold in a supermarket is 800 mg a day. The dose handed out by military doctors is 800 mg 4x a day. Yes, take 3200 mg a day for at least 30 days. Most of the time they give you 180 day supply. I probably took it for 15 years. They never told us it would fuck up our kidneys, they just said it might hurt your stomach, but if you didn't have any issues then it was no problem.