A 26-year-old Illawong woman was arrested for attempting to smuggle tablets into the jail at Nowra on Saturday.
Police will allege in Nowra Local Court that the woman had secreted a balloon containing 15 small tablets on her body.
Police suspect the tablets were steroids.
The woman attended the South Coast Correctional Centre on Saturday at 9.15am. She was spoken to by staff at the centre before producing the small balloon of tablets.
Police were called and the woman will be issued a Court Attendance Notice in relation to the matter.