I'm assuming they're either at L4/5 or L5/S1. At this time, the epidural or transforaminal epidural steroid with or without local anesthetics is the choice of therpy. The other options you have are: start narcotics like hydrocodone or oxycontin, but at the risk of overdose or becoming an addict. Or if severe enough, have surgery, i.e, laminectomy, which, most likely will relieve your sciatica, but the back pain persist.
Good luck!