"Types (classes) of pain medication
Pain medications are drugs used to relieve discomfort associated with disease, injury, or surgery. Because the pain process is complex, there are many types of pain drugs that provide relief by acting "...
Norflex Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Norflex (orphenadrine citrate) is a muscle relaxant used to treat muscle spasms/pain. Norflex is usually used along with rest, physical therapy, and other treatment. Norflex is available in generic form. Common side effects of Norflex include dry mouth or throat, headache, dizziness, drowsiness, lightheadedness, weakness, blurred vision, dilated pupils, nausea, vomiting, and constipation.
The dose of Norflex for adults is one 2 mL ampul (60 mg) intravenously or intramuscularly; may be repeated every 12 hours. Norflex may interact with other products that cause drowsiness including alcohol, antihistamines, cough and cold products, drugs for sleep or anxiety, muscle relaxants, and narcotics. Tell your doctor all medications and supplements you use. During pregnancy, this medication should be used only when prescribed. It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding. Withdrawal symptoms may occur if you suddenly stop taking this medication.
Our Norflex (orphenadrine citrate) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Norflex in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using orphenadrine and call your doctor at once if you have any of these serious side effects:
- fast, pounding, or uneven heartbeats;
- confusion, anxiety, agitation, tremors, hallucinations;
- seizure (convulsions); or
- urinating less than usual or not at all.
Less serious side effects may include:
- dry mouth or throat;
- blurred vision, dilated pupils;
- drowsiness, dizziness;
- nausea, vomiting, constipation; or
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Norflex (Orphenadrine Injection)
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Norflex Overview - Patient Information: Side Effects
To relieve dry mouth, suck (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water, or use a saliva substitute.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: mental/mood changes (such as confusion, anxiety, hallucinations), shaking (tremor), fast/pounding heartbeat, fainting, difficulty urinating, eye pain.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Norflex (Orphenadrine Injection)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Norflex FDA Prescribing Information: Side Effects
Adverse reactions of orphenadrine are mainly due to the mild anti-cholinergic action of orphenadrine, and are usually associated with higher dosage. Dryness of the mouth is usually the first adverse effect to appear. When the daily dose is increased, possible adverse effects include: tachycardia, palpitation, urinary hesitancy or retention, blurred vision, dilatation of pupils, increased ocular tension, weakness, nausea, vomiting, headache, dizziness, constipation, drowsiness, hypersensitivity reactions, pruritus, hallucinations, agitation, tremor, gastric irritation, and rarely urticaria and other dermatoses. Infrequently, an elderly patient may experience some degree of mental confusion. These adverse reactions can usually be eliminated by reduction in dosage. Very rare cases of aplastic anemia associated with the use of orphenadrine tablets have been reported. No causal relationship has been established.
Rare instances of anaphylactic reaction have been reported associated with the intramuscular injection of Norflex (orphenadrine) Injection.
Drug Abuse And Dependence
Orphenadrine has been chronically abused for its euphoric effects. The mood elevating effects may occur at therapeutic doses of orphenadrine.
Read the entire FDA prescribing information for Norflex (Orphenadrine Injection)
Additional Norflex Information
Norflex - User Reviews
Norflex User Reviews
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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