Chlorzoxazone (NA) + Diclofenac (NA)

Chlorzoxazone (NA) + Diclofenac (NA) 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.

Chlorzoxazone (NA) + Diclofenac (NA) 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.

• Pain due to muscle spasm

Pain due to muscle spasm
Chlorzoxazone (NA) + Diclofenac (NA) 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 Chlorzoxazone (NA) + Diclofenac (NA) until your doctor advises you to stop.

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 Defenac MR

• Nausea
• Vomiting
• Heartburn
• Diarrhea
• Stomach pain/epigastric pain
• Loss of appetite
• Dizziness
• Sleepiness

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. Chlorzoxazone (NA) + Diclofenac (NA) is to be taken with food.

Chlorzoxazone (NA) + Diclofenac (NA) is a combination of two medicines: Diclofenac and Chlorzoxazone, which relieves pain and relaxes the muscles. 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.

• Chlorzoxazone (NA) + Diclofenac (NA) 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 Chlorzoxazone (NA) + Diclofenac (NA) as it may cause excessive drowsiness.

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

Drugs.com. Chlorzoxazone. [Accessed 29 Apr. 2019] (online) Available from: