Back surg. 4 screws/2 rods. Fusion. 3x bypass, chest split open/wired back together. Knee surg 2X L, foot surg also. I'm the meantime I'm waiting on word of another poss back surg since the latest one is going south quick. And neck poss in spring? If I know anything, I know pain. This actually takes it away - usually I wouldn't comment, but this is unreal. I don't even overdue it, oil vape pen, 2X 400mg and for whatever reason this does more than any of the pain meds both Percocet 325/10, Vicodin 325/5 I've been given over the past years, I'm actually fully functional - yet almost zip on the pain chart. I'm relatively new to this to this type of "Medicating," got the card, figured it can't hurt - I've tried everything else? The headiness is clean - for me anyway. 30 mins in. Good luck finding the right Med for yourself sincerely, I've tried a few, this by far hands down for my particular situation is the best so far. 3 yrs experience.