Robaxin (Methocarbamol) Drug Information: Description, User Reviews, Drug Side Effects, Interactions

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May 26, 2012

Robaxin

Pain Management: Musculoskeletal Pain »

What Causes Musculoskeletal Pain?

The causes of musculoskeletal pain are varied. Muscle tissue can be damaged with the wear and tear of daily activities. Trauma to an area (jerking movements, auto accidents, falls, fractures, sprains, dislocations, and direct blows to the muscle) also can cause musculoskeletal pain. Other causes of pain include postural strain, repetitive movements, overuse, and prolonged immobilization. Changes in posture or poor body mechanics may bring about spinal alignment problems and muscle shortening, therefore causing other muscles to be misused and become painful.

What Are the Symptoms of Musculoskeletal Pain?

People with musculoskeletal pain sometimes complain that their entire bodies ache. Their muscles may feel like they have been pulled or overworked. Sometimes the muscles twitch or burn. Symptoms vary from person to person, but the common symptoms are:

Pain
Fatigue
Sl...

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ROBAXIN
(methocarbamol) Tablet, Film Coated

DRUG DESCRIPTION

robaxin®/robaxin®-750 (methocarbamol tablets, USP), a carbamate derivative of guaifenesin, is a central nervous system (CNS) depressant with sedative and musculoskeletal relaxant properties.

The chemical name of methocarbamol is 3-(2-methoxyphenoxy)-l,2-propanediol 1-carbamate and has the empirical formula C₁₁H₁₅NO₅. Its molecular weight is 241.24. The structural formula is shown below.

ROBAXIN - methocarbamol tablet Structural Formula Illustration

Methocarbamol is a white powder, sparingly soluble in water and chloroform, soluble in alcohol (only with heating) and propylene glycol, and insoluble in benzene and n-hexane.

robaxin (methocarbamol) ® is available as a light orange, round, film-coated tablet containing 500 mg of methocarbamol, USP for oral administration. The inactive ingredients present are corn starch, FD&C Yellow 6, hydroxypropyl cellulose, hypromellose, magnesium stearate, polysorbate 20, povidone, propylene glycol, saccharin sodium, sodium lauryl sulfate, sodium starch glycolate, stearic acid, titanium dioxide.

robaxin (methocarbamol) ®-750 is available as an orange capsule-shaped, film-coated tablet containing 750 mg of methocarbamol, USP for oral administration. In addition to the inactive ingredients present in robaxin (methocarbamol) ®, robaxin (methocarbamol) ®-750 also contains D&C Yellow 10.

What are the possible side effects of methocarbamol (Robaxin, Robaxin-750)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using methocarbamol and call your doctor at once if you have any of these serious side effects:

slow heart rate;
feeling like you might pass out;
jaundice (yellowing of your skin or eyes);
confusion, spinning sensation, loss of balance; or
seizure (convulsions).

Less serious side...

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What are the precautions when taking methocarbamol (Robaxin)?

Before taking methocarbamol, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, severe difficulty urinating (urinary retention).

This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

To minimize dizziness and lightheadedness, get up slowly when rising from a seated or lying position.

Caution is advised when...

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Last reviewed on RxList: 11/1/2010
This monograph has been modified to include the generic and brand name in many instances.