What is Orphenadrine used for?
Orphenadrine is used to treat muscle pain/spasms. It is usually used along with rest, physical therapy, and other treatment.
How should I take Orphenadrine?
Take this medication by mouth with or without food as directed by your doctor, usually twice daily. Do not increase your dose or use this drug more often or for longer than prescribed. Your condition will not improve any faster, and your risk of side effects will increase.
If you are using the extended-release tablets, do not crush or chew. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split extended-release tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing.
Tell your doctor if your condition does not improve or if it worsens.
How do I store Orphenadrine?
Orphenadrine is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Orphenadrine in the bathroom or the freezer. There may be different brands of Orphenadrine that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.
You should not flush Orphenadrine down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.
Precautions & warnings
What should I know before using Orphenadrine?
Before taking orphenadrine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: high pressure in the eye (glaucoma), stomach/intestinal/esophagus problems (such as ulcers, blockage), difficulty urinating (such as due to enlarged prostate), a certain type of muscle/nerve disease (myasthenia gravis), heart problems (such as fast/irregular heartbeat, heart failure).
This drug may make you dizzy or drowsy or blur your vision. Alcohol or marijuana can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Older adults may be more sensitive to the side effects of this drug, especially confusion, drowsiness, constipation, or trouble urinating. Confusion and drowsiness can increase the risk of falling.
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
It is unknown if this drug passes into breast milk. Consult your doctor before breast-feeding.
Is it safe during pregnancy or breast-feeding?
There are no adequate studies in women for determining risk when using this Orphenadrine during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Orphenadrine. Orphenadrine is pregnancy risk category C according to the US Food and Drug Administration (FDA).
FDA pregnancy risk category reference below:
- A=No risk,
- B=No risk in some studies,
- C=There may be some risk,
- D=Positive evidence of risk,
What side effects can occur from Orphenadrine?
Dry mouth, dizziness, drowsiness, lightheadedness, blurred vision, nausea, vomiting, and constipation may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
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.
Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.
What drugs may interact with Orphenadrine?
Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana, drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), other muscle relaxants (such as carisoprodol, cyclobenzaprine), or antihistamines (such as cetirizine, diphenhydramine).
Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.
Orphenadrine may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.
Does food or alcohol interact with Orphenadrine?
Orphenadrine may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.
What health conditions may interact with Orphenadrine?
Orphenadrine may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.
The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using this Orphenadrine.
What is the dose of Orphenadrine for an adult?
Usual Adult Dose for Muscle Spasm
Acute musculoskeletal conditions:
100 mg orally twice a day (morning and evening).
60 mg by intramuscular or intravenous injection. May repeat every 12 hours.
Quinine-resistant leg cramps:
100 mg orally at bedtime.
Renal Dose Adjustments
No specific dose adjustment guidelines have been suggested; however, caution is recommended in patients with renal dysfunction.
Liver Dose Adjustments
No specific dose adjustment guidelines have been suggested; however, caution is recommended in patients with liver dysfunction.
What is the dose of Orphenadrine for a child?
The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.
How is Orphenadrine available?
Orphenadrine is available in the following dosage forms and strengths:
- Oral tablet, extended release,
- Injectable solution,
- Compounding powder.
What should I do in case of an emergency or overdose?
In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.
What should I do if I miss a dose?
If you miss a dose of Orphenadrine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.
Hello Health Group does not provide medical advice, diagnosis or treatment.
Review Date: April 5, 2018 | Last Modified: April 5, 2018
Orphenadrine Dosage. https://www.drugs.com/dosage/orphenadrine.html. Accessed March 29, 2018.
Orphenadrine Citrate. https://www.webmd.com/drugs/2/drug-18031/orphenadrine-citrate-oral/details. Accessed March 29, 2018.