My mother is taking one megafreeflex tablets twice a day with other medicines ; tonact Asp 75, tetan 80 thyroup 25 and doxt-s 100. Now after blood test, it is seen that her urea became 66 (as per instrument, therange is given 20-40 ). My question is , Is it for the side effects for megafreeflex or thyroup tablets? Can she stop the megafreeflex tablets for 1-2 months? ( because she tells that her knee pain ,back pain increases and it is her belief that it is for megafreeflex tablet). J. Datta