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Flexura 400 Tablet

Metaxalone (400mg)

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Flexura 400 Tablet is a muscle relaxer. It provides relief from the discomfort associated with acute, painful musculoskeletal conditions such as rigidity, tension, stiffness, and muscle spasms.

Written By Dr. Anuj Saini, MMST, MBBS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 23 Jan 2026 | 10:15 AM (IST)

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General Information

Contains

Metaxalone (400mg)

Marketer

Sun Pharmaceutical Industries Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Flexura 400 Tablet can be taken with or without food. In general, you should try to use the smallest amount necessary to control your symptoms, for the shortest possible time. You should take this medicine regularly while you need it. Try not to miss doses as this will make the medicine less effective.

Some common side effects of this medicine include drowsiness, dizziness, headache, nervousness, nausea, vomiting, and gastrointestinal upset. If any of these side effects do not go away or get worse, you should let your doctor know. Your doctor may be able to suggest ways of preventing or reducing the symptoms.

To make sure it is safe for you, before taking this medicine, let your doctor know if you have any medical conditions or disorders. You should also tell your doctor all the other medicines you are using or taking. Pregnant and breastfeeding women should consult their doctors before using this medicine.

Uses of Flexura Tablet

Muscle relaxation

Benefits of Flexura Tablet

Muscle relaxation
Flexura 400 Tablet is a muscle relaxant that is used to relieve rigidity, inflammation, and swelling in conditions that affect muscles. It works by blocking chemical messengers in the brain that are responsible for such symptoms. It effectively relieves muscle stiffness or spasm, thereby improving muscle movement.
Take Flexura 400 Tablet as prescribed by the doctor. The dose and duration will be decided by the doctor depending on the condition you are being treated for. This will help you to go about your daily activities more easily and have a better, more active, quality of life.

Side effects of Flexura 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 Flexura

Drowsiness
Dizziness
Headache
Nausea
Vomiting
Gastrointestinal discomfort

How to use Flexura 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. Flexura 400 Tablet may be taken with or without food.

How Flexura Tablet works

Flexura 400 Tablet is a muscle relaxant. It works on the centres in the brain and spinal cord to relieve muscle stiffness or spasm without reduction in strength. This improves pain and movement of muscles.

Quick tips

Flexura 400 Tablet provides relief from rigidity, tension and stiffness in muscles (spasticity) that may occur due to various conditions affecting the nervous system.
Flexura 400 Tablet may cause dizziness or sleepiness. Do not drive or do anything requiring concentration until you know how it affects you.
Avoid consuming alcohol when taking Flexura 400 Tablet as it may cause excessive drowsiness.
Inform your doctor if you are pregnant, planning to conceive or breastfeeding.
Do not stop taking it suddenly without talking to your doctor if you've been on it for a long time.
Flexura 400 Tablet provides relief from rigidity, tension and stiffness in muscles (spasticity) that may occur due to various conditions affecting the nervous system.
Take it with or after food or a glass of milk.
Flexura 400 Tablet may cause dizziness or sleepiness. Do not drive or do anything requiring concentration until you know how it affects you.
Avoid consuming alcohol when taking Flexura 400 Tablet as it may cause excessive drowsiness.
Inform your doctor if you are pregnant, planning to conceive or breastfeeding.
Do not stop taking it suddenly without talking to your doctor if you've been on it for a long time.

Safety advice

Alcohol

UNSAFE

Do not drink alcohol while you are taking this medicine. Flexura 400 Tablet may cause excessive drowsiness when taken with alcohol.

Pregnancy

CONSULT YOUR DOCTOR

Information regarding the use of Flexura 400 Tablet during pregnancy is not available. Please consult your doctor.

Breast feeding

CONSULT YOUR DOCTOR

Information regarding the use of Flexura 400 Tablet during breastfeeding is not available. Please consult your doctor.

Driving

UNSAFE

Flexura 400 Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

CAUTION

Flexura 400 Tablet should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.

Liver

CAUTION

Flexura 400 Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.

Interaction with drugs

Taking Flexura with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Moderate