"went to the er because of sciatic nerve pressure for severe pain and multiple muscles spasms that would not stop. 2 injections of dilaudid had no effect at all. tried some 4mg oral dilaudid tablets and no effect at all. this is most likely a very effective pain reliever but this indicates that not all pain relievers work on me. doctors don&#039;t believe me so i almost always refuse to take any pain medication. i think i need to be studied."