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Orphenadrine Citrate

Orphenadrine citrate Prescription
Generic Name: orphenadrine (or FEN a drin)
Brand Name: Norflex, ...show all 10 brand names
Physician reviewed orphenadrine patient information - includes orphenadrine description, dosage and directions.

Average Savings for orphenadrine citrate (generic): 22.24%
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Orphenadrine Citrate Drug Information:

Orphenadrine is a muscle relaxer. Orphenadrine is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury. Orphenadrine may also be used for purposes not listed in this medication guide. You should not take orphenadrine if you have urination problems, an enlarged prostate, glaucoma, a stomach ulcer or blockage in your digestive tract, trouble swallowing, or myasthenia gravis. You should not use orphenadrine if you are allergic to it, or if you have: Learn more

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Orphenadrine Citrate Side Effects

For the Consumer

Applies to orphenadrine: oral tablet extended release

Other dosage forms:

  • injection solution

Side effects requiring immediate medical attention

Along with its needed effects, orphenadrine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking orphenadrine:

Rare

  • Chest pain
  • chills
  • cough
  • fever
  • hallucinations (seeing, hearing, or feeling things that are not there)
  • headache
  • shortness of breath, troubled breathing, tightness in chest, and/or wheezing
  • skin rash, hives, itching, or redness
  • sores, ulcers, or white spots on lips or in mouth
  • swollen and/or painful glands
  • unusual bruising or bleeding
  • unusual tiredness or weakness

Incidence not known

  • Abdominal or stomach pain
  • diarrhea
  • fainting
  • fast, pounding irregular heartbeat or pulse
  • glaucoma
  • joint or muscle pain
  • nausea
  • numbness or tingling of face, hands, or feet
  • redness and soreness of eyes
  • swelling of feet or lower legs
  • vomiting

Get emergency help immediately if any of the following symptoms of overdose occur while taking orphenadrine:

Symptoms of Overdose

  • Blurred vision
  • confusion, delirium, or hallucinations
  • constipation
  • difficult urination
  • drowsiness
  • dry eyes, mouth, nose, or throat
  • eye pain
  • flushing or redness of face
  • troubled breathing

Side effects not requiring immediate medical attention

Some side effects of orphenadrine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common or rare

  • Dizziness or lightheadedness
  • excitement, irritability, nervousness, or restlessness
  • headache
  • muscle weakness
  • unusually large pupils of eyes

Incidence not known

  • Anxiety
  • deep or fast breathing with dizziness
  • itching skin
  • mental confusion
  • numbness of feet, hands and around mouth
  • trembling or shaking of hands or feet shakiness in legs, arms, hands, or feet

For Healthcare Professionals

Applies to orphenadrine: compounding powder, injectable solution, oral tablet extended release

General

The more commonly reported adverse reactions are due to the anticholinergic effects of this drug; dry mouth is usually the first adverse effect to appear.

Hypersensitivity

Rare (less than 0.1%): Anaphylaxis (with IM injection)

Frequency not reported: Hypersensitivity reactions

Nervous system

Frequency not reported: Headache, light-headedness, dizziness, drowsiness, syncope, tremor, sedation, convulsions, coordination difficulties

Psychiatric

Rare (less than 0.1%): Memory disturbances

Frequency not reported: Hallucinations, agitation, euphoria, restlessness, mental confusion (especially elderly)

Ocular

Frequency not reported: Blurred vision, dilatation of pupils, increased ocular tension, accommodation disorders

Cardiovascular

Frequency not reported: Tachycardia, palpitations

Gastrointestinal

Frequency not reported: Dry mouth, nausea, vomiting, constipation, gastric irritation

Genitourinary

Frequency not reported: Urinary hesitancy, urinary retention

Musculoskeletal

Frequency not reported: Weakness

Dermatologic

Rare (less than 0.1%): Urticaria, other dermatoses

Frequency not reported: Pruritus

Hematologic

Rare (less than 0.1%): Aplastic anemia

Editorial References and Review

Medically reviewed by USARx EDITORIAL TEAM Last updated on 1/1/2020.

Source: Drugs.com Orphenadrine Citrate (www.drugs.com/mtm/orphenadrine.html).