I have such a sudden problem. I have already taken 3 tablets of olfen uno, in the morning I have to take 4. Since yesterday I feel the weakening of muscle strength, especially in the legs, but I also have the impression that I generally feel weaker and slightly dizzy. From tonight, when I walk, my legs often bend. After going to the toilet, I began to hurt, it seems that the muscles in my knees. I have to take the drug up to 10 days. I do not know if I can put it away so suddenly, and then return to it normally? For example, taking 1 day break from the drug? Can this drug cause such a thing as muscle weakness? I wonder whether to take another tablet in the morning, because it works for 24 hours, and I have no chance to get to the doctor quickly. I take the drug for suspected knee inflammation, it's a little better with it, because a few days ago I had them still so stiffened in the knees and very painful, and now I somehow walk around the house. Thank you for your help.