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Flexon MR Tablet: Uses, Side Effects, Composition & Dosages

Flexon MR Tablet is a non-steroidal anti-inflammatory, analgesic, and an antipyretic (that which reduces fever) Tablet. It is also used for redness, muscle relaxation, and swelling, toothache, joint pain, menstrual pain, etc. It can be used while patients are on physical therapy.

Flexon MR Tablet is manufactured and marketed by Aristo Pharmaceuticals Ltd which is located in Mumbai, India.


Composition and Nature of Flexon MR Tablet:

Flexon -MR (Chlorzoxazone) Tablet is a combination of the following drugs:

  • Paracetamol             (325mg)
  • Ibuprofen                  (400mg)
  • Chlorzoxazone        (250mg)

Flexon MR Tablet is available is a pack of 10 Tablets with the following strength 400 mg + 325 mg + 250 mg


Uses of Flexon MR Tablet:

Flexon MR Tablet is used to reduce pain, and also has the following other uses:

  • Headache
  • Fever
  • Cold
  • Back Pain
  • Toothache
  • Muscle Pain
  • Arthralgia (Joint Pain)
  • Body Pain
  • Arthritis
  • Gout
  • Spondylitis
  • Menstrual Pain
  • Inflammation (redness & swelling)


Side Effects of Flexon MR Tablet:

Using Flexon MR Tablet may cause the following side effects in some individuals. 

  • Drowsiness
  • Swollen facial features
  • Feeling of sickness
  • Gastrointestinal bleeding
  • Dizziness
  • Light headedness
  • Malaise
  • Skin rashes
  • Angioneurotic edema
  • Anaphylactic reactions


Common Dosage of Flexon MR Tablet:

The common dosage that is recommended is one tablet- once or twice a day. Patients should consult a doctor in case they are not sure of the dosage. Generally, Flexon MR Tablet is taken after food. It is not recommended to take Flexon MR Tablet on an empty stomach. However, the doctor will know the patient's’ medical situation and prescribe the dosage and the duration of the treatment.

This medicine should be taken orally without biting, breaking, crushing, or chewing the Tablet. It should be taken with milk which helps avoid acidity and does not upset the stomach.


How Flexon MR Tablet works?

Flexon MR Tablets work by depressing the muscle reflexes and increasing the pain threshold. It increases the blood flow across the skin and prevents the production of prostaglandin which is released by the body during pain.


Warnings and Precautions When to Avoid Flexon MR Tablet:

The following precautions should be taken by the patients while they are using this medicine.

  • They should avoid excessive exposure to sunlight.
  • They should consult their doctor if they have intestinal bleeding.
  • They should avoid alcohol.
  • They should not take Aspirin when they are using this drug – except under the doctor’s advice.


Substitutes for Flexon MR Tablet:

The following substitutes can be taken in case this drug is unavailable or unsuitable.

  • Dolomed MR Tablet (Comed Chemicals Ltd)
  • Spontrel Tablet (Dr Reddy's Laboratories Ltd)
  • Sysdol MR Tablet (Sysmed Laboratories Pvt Ltd)
  • Coflam MR Tablet (Parasol Laboratories)
  • Artiflex Plus Tablet (Glenmark Pharmaceuticals)
  • Dolomed MR Tablet (Comed Chemicals Ltd)
  • Spontrel Tablet (Dr Reddy's Laboratories Ltd)
  • Sysdol MR Tablet (Sysmed Laboratories Pvt Ltd)
  • Coflam MR Tablet (Parasol Laboratories)
  • Artiflex Plus Tablet(Glenmark Pharmaceuticals Ltd)

Flexon MR Tablet Interactions:

Using other drugs or OTC drugs along with Flexon MR Tablet may reduce the effectiveness of the drug, may increase the risk of side effects, or cause the drug to act differently. Patients should tell their doctor about their medical condition and the medications they take in order to prevent any interaction with the medications.

The following drugs may interact with Flexon MR Tablet:

  • Alcohol
  • Alprazolam
  • Aspirin
  • Atorvastatin
  • Cetirizine
  • Codeine
  • Corticosteroids
  • Cyclosporine
  • Diazepam
  • Diphenhydramine
  • Esomeprazole
  • Juxtapid mipomersen
  • Ketoconazole
  • Leflunomide
  • Lithium drugs
  • Methotrexate
  • Mifepristone
  • Muscle Relaxants
  • Prilocaine
  • Quinolone antibiotics
  • Sedatives
  • Tacrolimus
  • Teriflunomide
  • Topiramate
  • Warfarin
  • Zidovudine
  • Zolpidem




1) Is Flexon MR Tablet safe for pregnant women?

Ans: Since this drug contains Chlorzoxazone and Paracetamol, it is unsafe for pregnant women to consume Flexon MR Tablet. In certain cases, this may be taken under the specific recommendation of a doctor.


2) Can breastfeeding mothers take these Tablets?

Ans: The combination of the drugs in Flexon MR Tablet makes it unsafe for women who are breastfeeding. Talk to a doctor about this and they may either adjust the dosage or prescribe a substitute drug.


3) Is Flexon MR suitable for back pain and fever?

Ans: Please do not use Flexon MR Tablet without referring to a doctor.


4) How long does it take for the Flexon MR Tablet to be effective?

Ans: In most cases the effect can be noticed on the same day itself. However, this may not be true for all individuals who are using this drug. If you see no improvement after 2-3 days then you should consult a doctor who may then change the drug.


5) How long should I take Flexon MR Tablet? Should I continue even after the pain is gone?

Ans: It is advisable to follow the doctor’s advice who will recommend the duration of the treatment and the dosage.


6) Is it dangerous to drive a vehicle or work on heavy machinery when taking Flexon MR Tablet?

Ans: If one experiences hypotension, low blood pressure, headache, dizziness, or drowsiness as side-effects, then one should refrain from driving and operating heavy machinery.


7) Is it safe to drink alcohol while taking this drug?

Ans: Alcohol consumption is not recommended alongside this drug since it inhibits yours senses and causes drowsiness and other side effects.


8) Is Flexon MR Tablet addictive or habit forming?

Ans: Most drugs don’t have the potential for addiction or abuse. The government categorizes such drugs under Schedule H or X in India. Please read the product details on the packaging or consult a doctor if this drug has addictive or controlled substances before you start taking the Flexon MR Tablet.


9) Can I stop this medication abruptly if there is an improvement in my condition?

Ans: Stopping treatment abruptly is not a good idea because of rebound effects. The treatment has to run its duration. Please consult a doctor if you are planning to discontinue the treatment.


10) What are the storage instructions for Flexon MR Tablet?

Ans: These tablets can be stored at room temperature away from heat and direct light. Keep all medication away from children and pets. Do not dispose the medications in such a way that it harms the environment.


11) Can I consume Flexon MR Tablets if they are expired?

Ans: If you take a single dose of expired Flexon MR Tablet, it may not cause any adverse effects. However, it is not recommended to consume any medication after the expiry date. There is a reason why medicines have expiry dates- after this date the medications lose their effectiveness, or may even have a serious consequence upon your health. This is especially true if you are suffering from a chronic disease like heart problems, seizures, or any life threatening allergies. Ensure that you have a stock of unexpired medication.

Last updated on : 27-12-2018
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