I m 40 yrs old male, having lower back pain from last week, on fist day it was so painful and difficult to sit , stand or walk, so I took 5 days complete bed rest (sleeping on back), after that visited doctor and he gave Zerodal TH 8 20 tablets for 10 days. So I would like to know that is there any side effect of this tablets, is so please explain. Thanking you