Flexeril is used to treat muscle spasms that occur for short durations. It is used along with physical therapy to give maximum relaxation to muscles. The drug works by preventing the nerve impulses carrying pain sensation to reach the brain. This helps to experience minimum muscle spasms.


  • Flexeril has to be taken as directed by the doctors.
  • Adult dosages:
  • Oral Tablet: 5mg to 10 mg three times a day


  • Blurred vision
  • Dizziness
  • Pounding heartbeats
  • Problems in speaking
  • Trembling
  • Dryness of the mouth
  • Bloating
  • Constipation
  • Trouble in sleeping
  • Unusual muscle weakness
  • Frequent urination
  • General feeling of discomfort or illness
  • Diarrhea
  • Excitement or nervousness
  • Muscle twitching
  • Numbness, tingling, pain, or weakness in hands or feet
  • Headache
  • Unusual tiredness


  • Clumsiness or unsteadiness
  • Confusion
  • Ringing in the ears
  • Yellow eyes or skin
  • Faintness
  • Mental depression
  • Skin rashes
  • Problems in urinating


  • Buspirone
  • 5-hydroxytryptophan
  • Alfentanil
  • Amitriptyline
  • Iopamidol
  • Isocarboxazid
  • Vortioxetine
  • Zonisamide
  • Nortriptyline
  • Oxycodone
  • Hydrocodone
  • Sufentanil
  • Tapentadol
  • Topiramate
  • Hydromorphone
  • Fentanyl
  • Butorphanol
  • Citalopram

Flexeril has major interactions with 75 different drugs.


  • Baclofen
  • Cyclizine
  • Cyproheptadine
  • Pyrilamine
  • Quazepam
  • Quetiapine
  • Ramelteon
  • Darifenacin
  • Ziprasidone
  • Zolpidem
  • Deferasirox
  • Belladonna
  • Trospium
  • Umeclidinium
  • Valbenazine

Flexeril has moderate interactions with 279 different drugs.


  • This drug contains inactive ingredients which may result in allergic reactions. So a pharmacist must be consulted before consuming it.
  • It is of utmost necessity to discuss any medical history related to seizures, family history of liver diseases, urination problems, enlarged prostate and personal history of glaucoma.
  • Since this drug makes a person dizzy so activities like driving and others which need more attention should be avoided.
  • Use of this drug show more sensitive symptoms on adults like confusion, drowsiness, or constipation.
  • The drug should not be administered in children who are below 15 years of age.


  • Use of Flexeril in pregnancy may be acceptable only if the benefits exceed the risks involved.
  • Studies in animal pregnancy have shown adverse effects on fetus. But no adequate studies have been found in humans to access the damage involved.
  • It is not known if Flexeril transfers into breast milk. Preferable precautions must be taken during breast feeding.


  • Use of this drug is prohibited if the patient has congestive heart failure, thyroid disorder or has had heart attack recently.
  • It is not recommended to take this drug if the person had taken an MAO inhibitor during the last 14 days.
  • Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center immediately.

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