Norflex
Generic name:
Pharmacist-reviewed drug information from the RxWiki encyclopedia.
Overview
Norflex is a prescription medication used to relieve pain and discomfort caused by strains, sprains, and other muscle injuries. Norflex belongs to a group of drugs called skeletal muscle relaxants. These work by changing the way the body senses muscle pain.
This medication comes in an injectable form to be given into the vein (IV) or into the muscle (IM) by a healthcare provider.
This medication also comes as an extended-release tablet to take by mouth. It is usually taken twice a day, with or without food.
Common side effects include dry mouth, weakness, nausea, and blurred vision. Do not drive or operate heavy machinery until you know how Norflex affects you.
What is it used for?
Norflex is a prescription medication used to relieve pain and discomfort caused by strains, sprains, and other muscle injuries.
This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.
How to take it
Oral:
- The recommended dose of Norflex (orphenadrine citrate) is 2 tablets per day, once in the morning and once in the evening.
Injectable:
The recommended dose is 60 mg injected once or twice a day into the muscle (IM) or into a vein (IV).
Warnings
Serious side effects have been reported with this medication. Seek medication attention right away if you experience any of the following:
- fast or irregular heartbeat
- fainting
- confusion
- hallucinations
- hypersensitivity reaction (a severe allergic reaction). Signs or symptoms of hypersensitivity include
- chest pain
- swelling of the face, eyes, lips, tongue, arms, or legs
- difficulty breathing or swallowing
- rash
Norflex can cause blurry vision, dizziness, and drowsiness. Do not drive or operate heavy machinery until you know how Norflex affects you.
Do not take this medication if you:
- are allergic to Norflex or to any of its ingredients
- have glaucoma
- have a pyloric or duodenal obstruction
- have stenosing peptic ulcers
- have prostatic hypertrophy or obstruction of the bladder neck
- have cardio-spasm (megaesophagus)
- have myasthenia gravis
Side effects
Common side effects with Norflex include the following:
- dry mouth
- weakness
- nausea
- blurred vision
- dizziness
- a racing heartbeat
- heartbeat sensations
- decreased ability to urinate
- increased eye pressure
- vomiting
- headache
- dizziness
- constipation
- drowsiness
- itch
- hallucinations
- agitation
- shakes or tremor
- stomach irritation
- mental confusion
This is not a complete list of this medication’s side effects. Ask your doctor or pharmacist for more information.
Tell your doctor if you have any side effect that bothers you or that does not go away.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Drug interactions
Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take:
- amantadine (Symadine, Symmetrel)
- fluphenazine (Prolixin)
- haloperidol (Haldol)
- medications for colds or allergies
- medications for depression
- perphenazine (Trilafon)
- prochlorperazine (Compazine)
- promethazine (Phenergan)
- sedatives
- sleeping pills
- trifluoperazine (Stelazine)
- alcohol
This is not a complete list of all drug interactions. Ask your doctor or pharmacist for more information.
Pregnancy
Tell your doctor if you are pregnant or plan to become pregnant.
The FDA categorizes medications based on safety for use during pregnancy. Five categories - A, B, C, D, and X, are used to classify the possible risks to an unborn baby when a medication is taken during pregnancy.
This medication falls into category C. Animal studies have not been done with Norflex. It is also not known whether Norflex can cause harm to the fetus (unborn baby) if given to a pregnant woman. Norflex should be given to a pregnant woman only if clearly needed.
Breastfeeding
Tell your doctor if you are breastfeeding or plan to breastfeed.
All information on this site is provided “as-is” for informational purposes only and is not a substitute for medical advice or treatment. You should consult with a medical professional if you have any questions about your health.