My mother was suffering from severe lower right back and thigh pain. After talking with doctor I gave her Chlorzoxazone 250 mg at night and 250 mg in morning yesterday. She was complaining severe abdominal pain in night. I have stopped the medication but question is
1) How long the effect of it last ?
2) She had an operation of l4-l5 fusion & decompression 32 days ago. Does the medicine also affects inner stitches as well ? as she is reporting little pain at the operated area.

i will seek her to the doctor as soon as possible. Thanks.