Medications


Orphenadrine injection

What is this medicine?

ORPHENADRINE (or FEN a dreen) is a muscle relaxant. It is used to treat pain from muscle problems.

How should I use this medicine?

This medicine is for injection into a vein. It is usually given by a health care professional in a hospital or clinic setting.

If you get this medicine at home, you will be taught how to prepare and give this medicine. Use exactly as directed. Take your medicine at regular intervals. Do not take your medicine more often than directed.

It is important that you put your used needles and syringes in a special sharps container. Do not put them in a trash can. If you do not have a sharps container, call your pharmacist or healthcare provider to get one.

Talk to your pediatrician regarding the use of this medicine in children. This medicine is not approved for use in children.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

  • breathing problems

  • unusually tired or weak

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • dizziness

  • dry mouth

  • tiredness

What may interact with this medicine?

Do not take this medication with any of the following medicines:

  • narcotic medicines for cough

This medicine may also interact with the following medications:

  • alcohol

  • antihistamines for allergy, cough and cold

  • certain medicines for anxiety or sleep

  • certain medicines for depression like amitriptyline, fluoxetine, sertraline

  • certain medicines for seizures like phenobarbital, primidone

  • cyclobenzaprine

  • general anesthetics like halothane, isoflurane, methoxyflurane, propofol

  • local anesthetics like lidocaine, pramoxine, tetracaine

  • medicines that relax muscles for surgery

  • narcotic medicines for pain

  • phenothiazines like chlorpromazine, mesoridazine, prochlorperazine, thioridazine

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

Where should I keep my medicine?

Keep out of the reach of children.

If you are using this medicine at home, you will be instructed on how to store this medicine. Throw away any unused medicine after the expiration date on the label.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • glaucoma

  • heart disease

  • kidney disease

  • myasthenia gravis

  • peptic ulcer disease

  • prostate disease

  • stomach problems

  • an unusual or allergic reaction to orphenadrine, sulfites, other medicines, foods, lactose, dyes, or preservatives

  • pregnant or trying to get pregnant

  • breast-feeding

What should I watch for while using this medicine?

Your condition will be monitored carefully while you are receiving this medicine. Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

If you are taking another medicine that also causes drowsiness, you may have more side effects. Give your health care provider a list of all medicines you use. Your doctor will tell you how much medicine to take. Do not take more medicine than directed. Call emergency for help if you have problems breathing or unusual sleepiness.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.


NOTE:This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider. Copyright© 2017 Elsevier
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