Norflex -- also known by its generic name Orphenadrine -- is a prescription medication that provides relief for muscle pain. It specifically pinpoints the effects of stiffness and discomfort to muscles caused by strains and other injuries, acting as a muscle relaxer. Norflex interacts with the central nervous system to produce its relaxing effects.
Norflex can be administered in two ways: orally or by injection. Injection must be done by a physician or trained professional in an office setting. The injection is placed in a vein or muscle. According to the Mayo Clinic, the injection method is only used for the first couple of doses and then the patient switches to pills.
While Norflex relaxes the muscles that are hurting, the function of the drug lies in its ability to allow the patient to rest without the pain. The patient should also be able to exercise and participate in physiotherapy due to the effects of Norflex. As the Mayo Clinic indicates, Norflex does not provide the entire solution to the problem since rest, exercise and physiotherapy must accompany the treatment.
Certain individuals must take precautions to either avoid Norflex or make an informed choice about taking it. As of early 2011, there is not data to show that the drug is safe or effective for children, the elderly, pregnant women or breastfeeding women. Anyone with urinary problems, heart problems, an enlarged prostate, glaucoma or a stomach ulcer should avoid Norflex.
Possible side effects of Norflex include fast or uneven heartbeat, confusion, anxiety, agitation, seizures, urinating less than normal or not at all, dry mouth and blurred vision. In addition, other reported problems include headaches, drowsiness, dizziness, nausea, vomiting, difficulty breathing, hives and shortness of breath.