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Fenlong MR Tablet is a combination medicine used in the treatment of pain due to muscle spasm. It improves the movement of muscles and provides relief from pain and discomfort associated with muscle spasms.

Written By Dr. Sakshi Jain, MS, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 16 Mar 2026 | 04:08 PM (IST)
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General Information

Contains

Diclofenac (50mg)+ Chlorzoxazone (500mg)

Marketer

SKN Organics

Storage

Store below 30°C
The content is shown in English
Fenlong MR Tablet image
Fenlong MR Tablet image

Product introduction

Fenlong MR Tablet should be taken with food. This will prevent you from getting an upset stomach. You should take it regularly as advised by your doctor. Do not take more or use it for a longer duration than recommended by your doctor.

Some of the common side effects of this medicine include nausea, vomiting, heartburn, diarrhea, stomach pain, loss of appetite, and dizziness. If any of these side effects bother you or do not go away with time, you should let your doctor know. Your doctor may help with ways to reduce or prevent these side effects.

The medicine may not be suitable for everybody. Before taking it, let your doctor know if you have any problems with your heart, kidneys, and liver. To make sure it is safe for you, let your doctor also know all the other medicines you are taking. Pregnant and breastfeeding mothers should first consult their doctors before using the medicine.

Uses of Fenlong MR Tablet

  • Pain due to muscle spasm

Benefits of Fenlong MR Tablet

Pain due to muscle spasm
Fenlong MR Tablet treats pain due to muscle spasm by relaxing stiff muscles. It also reduces swelling in the muscles. Altogether, it helps in easy movement and reduces discomfort. Once you see some improvement, you can start doing therapy exercises (such as walking or breathing exercises) that will help you get your strength back more quickly. It is advisable to continue taking Fenlong MR Tablet until your doctor advises you to stop.

Side effects of Fenlong MR Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Fenlong MR
  • Vomiting
  • Heartburn
  • Diarrhea
  • Stomach pain/epigastric pain
  • Loss of appetite
  • Dizziness
  • Nausea
  • Sleepiness

How to use Fenlong MR Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Fenlong MR Tablet should be taken with or after food.

How Fenlong MR Tablet works

Diclofenac is a non-steroidal anti-inflammatory drug (NSAID) which works by blocking the release of certain chemical messengers that cause pain and inflammation (redness and swelling). Chlorzoxazone is a muscle relaxant. It works on the centres in the brain and spinal cord to relieve muscle stiffness or spasm and to improve pain and movement of muscles.

All substitutes for Fenlong MR Tablet

For information purposes only. Consult a doctor before taking any medicine.

New Diclomac-MR Tablet

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₹5.85/tablet
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<h3 class=bodySemiBold>New Diclomac-MR Tablet</h3>

Medizox Tablet

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₹11.7/tablet
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<h3 class=bodySemiBold>Medizox Tablet</h3>

Quick tips

  • Fenlong MR Tablet helps relieve pain and muscle spasm that may occur due to strains, sprains, and muscle injuries.
  • It is usually used along with rest and physical therapy.
  • Take it with food to avoid an upset stomach.
  • It may cause dizziness. Do not drive or do anything requiring concentration until you know how it affects you.
  • Avoid consuming alcohol when taking Fenlong MR Tablet as it may cause excessive drowsiness.

Safety advice

Alcohol

Alcohol

CAUTION
Alcohol should be used with caution while taking Fenlong MR Tablet.
Pregnancy

Pregnancy

UNSAFE
Fenlong MR Tablet is highly unsafe during pregnancy. It can cause serious harm to the unborn baby, including birth defects and pregnancy loss. Do not use this medicine if you are pregnant or planning to become pregnant.
Breast feeding

Breast feeding

CONSULT YOUR DOCTOR
Fenlong MR Tablet may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.
Driving

Driving

UNSAFE
Fenlong MR Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.
Kidney

Kidney

CAUTION
Fenlong MR Tablet should be used with caution in patients with kidney disease. Dose adjustment may be needed.
Liver

Liver

CAUTION
Fenlong MR Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.
Regular monitoring of liver function tests is recommended in patients with liver disease if this medicine is to be taken for a long time.

Frequently asked questions

Fenlong MR Tablet is used in the treatment of pain due to muscle spasm. It improves the movement of muscles and provides relief from pain and discomfort associated with muscle spasms.
No, you should avoid Fenlong MR Tablet if you have had stomach ulcers or bleeding, as it can make these conditions worse and lead to serious complications.
Fenlong MR Tablet may cause liver problems. If you experience symptoms like yellowing of the skin, eyes, dark urine, stomach pain, or unusual tiredness, stop taking it and seek medical help immediately.
Yes, Fenlong MR Tablet can cause dizziness, and drowsiness, so avoid driving or operating machinery until you know how it affects you.
Fenlong MR Tablet is not recommended for children below 12 years without doctor's supervision. For older children, the dose must be adjusted and prescribed by a child specialist.
You can take Fenlong MR Tablet with food, or milk to help reduce stomach irritation and upset.
Some people may experience ringing or buzzing sounds in the ears during Fenlong MR Tablet treatment. If this happens, notify your doctor, as it may indicate a side effect requiring attention.

Fact Box

Habit Forming

No

Therapeutic Class

PAIN ANALGESICS

References

  1. Diclofenac. Daventry, Northamptonshire: Dexcel Pharma Ltd.; 1996 [revised 20 Dec. 2017]. [Accessed 29Apr. 2019] (online) Available from:
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User feedback

Once A Day
59%
Twice A Day
29%
Thrice A Day
12%
Others
100%
Average
100%
Abdominal pain
50%
No Side Effect
50%
With food
100%
Average
100%
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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: SKN Organics
Address: PLOT NO 1A GROUND & 1ST FLOOR AARTHI INDUSTRIAL ESTATE, MOULIVAKKAM, CHENNAI CHENNAI TN 600116 IN , - , .

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Fenlong MR Tablet. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's â„ž and the availability of this medicine.

In case of any issues, contact us

Email ID: [email protected]
Phone Number: 0124-4166666
Address: 5th Floor Tower - B of the Presidency Building, 46/4 Mehrauli Gurgaon Road, Sector 14, Gurugram, Haryana-122001, India

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