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.
Before taking this medicine
You should not use orphenadrine if you are allergic to it, or if you have:
urination problems;
an enlarged prostate;
glaucoma;
a stomach ulcer;
a blockage in your stomach or intestines;
trouble swallowing; or
myasthenia gravis.
To make sure orphenadrine is safe for you, tell your doctor if you have:
heart disease;
a heart rhythm disorder;
coronary artery disease; or
if you also use a narcotic (opioid) medication.
It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
It is not known whether orphenadrine passes into breast milk or if it could affect the nursing baby. Tell your doctor if you are breast-feeding.
Orphenadrine is not approved for use by anyone younger than 18 years old.
How should I take orphenadrine?
Follow all directions on your prescription label. Do not take  orphenadrine in larger or smaller amounts or for longer than recommended.
Orphenadrine may be habit-forming. Never share orphenadrine with another person, especially someone with a history of drug abuse or addiction. Keep the medication in a place where others cannot get to it. Selling or giving away this medicine is against the law.
Orphenadrine is usually taken 2 times per day, once in the morning and once in the evening. Follow your doctor's dosing instructions.
Do not crush, chew, or break an extended-release tablet. Swallow it whole.
Orphenadrine is only part of a complete program of treatment that may also include rest, physical therapy, or other pain relief measures.
Store orphenadrine at room temperature away from moisture, heat, and light. Keep the bottle tightly closed when not in use.
Keep track of the amount of medicine used from each new bottle. Orphenadrine is a drug of abuse and you should be aware if anyone is using your medicine improperly or without a prescription.
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
