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Robaxin-750

Generic name: methocarbamol (oral/injection)

Brand names: Robaxin, Robaxin-750

Used for Tetanus
Last updated November 3, 2026 0 views
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What is Robaxin-750?

Robaxin-750 is a muscle relaxer that is used along with rest and physical therapy to treat conditions of the skeletal muscles such as pain or injury.

Robaxin-750 injection is sometimes used to treat tetanus (lockjaw), which causes painful muscle tightening.

Robaxin-750 may also be used for other reasons not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

Warnings

Follow all instructions on your medicine label and package. Inform each of your healthcare providers about all your medical conditions, allergies, and all medicines you are using.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

You should not use Robaxin-750 if you are allergic to it.

Tell your doctor if you have ever had:

  • kidney disease;
  • a seizure; or
  • myasthenia gravis.

Robaxin-750 may harm an unborn baby. Use effective birth control to prevent pregnancy, and tell your doctor if you become pregnant.

It may not be safe to breastfeed while using Robaxin-750. Ask your doctor about any risk.

Robaxin-750 is not approved for use by anyone younger than 16 years old unless to treat Tetanus.

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Robaxin-750 side effects

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

Robaxin-750 may cause serious side effects. Stop using Robaxin-750 and call your doctor right away if you have:

  • a light-headed feeling, like you might pass out;
  • slow heartbeats;
  • a seizure;
  • jaundice (yellowing of your skin or eyes); or
  • pain, bruising, swelling, or skin changes where a Robaxin-750 injection was given.

Common side effects of Robaxin-750 may include:

  • headache, dizziness, drowsiness;
  • fever;
  • confusion, problems with memory;
  • nausea, vomiting, upset stomach;
  • blurred vision, double vision;
  • flushing (warmth, redness, or tingly feeling);
  • sleep problems (insomnia); or
  • lack of coordination.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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How should I use Robaxin-750?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed. Robaxin-750 is only part of a complete treatment program that may also include rest, physical therapy, or other pain relief measures.

Robaxin-750 oral is taken by mouth. You may need to reduce your dose after the first 2 or 3 days of treatment. Carefully follow your doctor's dosing instructions.

Robaxin-750 injection is injected into a muscle or given as an infusion into a vein. A healthcare provider will give you this injection.

Robaxin-750 injection is usually given as a single dose before you start taking the oral form.

Tell your caregivers if you feel any burning, pain, or swelling around the IV needle when Robaxin-750 is injected.

This medicine can affect the results of certain medical tests. Tell any doctor who treats you that you are using Robaxin-750.

Store at room temperature away from moisture and heat. Keep the bottle tightly closed when not in use.

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is nearly time for your next dose. Do not take two doses at the same time.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

  • Overdose symptoms may include nausea, extreme drowsiness, fainting, seizure, or coma.

Avoid driving or hazardous activity until you know how Robaxin-750 will affect you. Dizziness or drowsiness can cause falls, accidents, or severe injuries.

  • Drinking alcohol with this medicine can cause side effects.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect Robaxin-750?

Using Robaxin-750 with other drugs that make you sleepy or slow your breathing can lead to serious side effects or death. Talk to your doctor before using opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.

Other drugs may impact Robaxin-750, including prescription and over-the-counter medicines, vitamins, and herbal products. Inform your doctor about all your current medicines and any medicine you begin or stop using.

This section was rewritten for readability and reviewed for meaning.

Common questions about Robaxin-750

Can you take methocarbamol with diclofenac?
There is no known drug interaction between methocarbamol and non-steroidal anti-inflammatory drugs (NSAIDs) such as diclofenac. You may take methocarbamol and diclofenac together. Because it may cause drowsiness or dizziness, methocarbamol interacts with other drugs that have similar effects, such as alcohol and drugs that treat sleep disorders.
How long does it take for methocarbamol to work?
When taken by mouth, it takes methocarbamol about 30 minutes to start working. It is usually taken 4 times a day to relax muscles and ease pain and discomfort.
Is methocarbamol addictive?
Methocarbamol does not come with a label warning regarding abuse, addiction or dependency. Human studies regarding abuse have provided mixed results, so the answer remains unclear. It may have abuse potential. It can also cause problems if it’s taken with other drugs that have abuse potential, such as alcohol, benzodiazepines, opioids and central nervous system depressants.
Is methocarbamol a controlled substance?
Methocarbamol is not labeled as a controlled substance by the U.S. Drug Enforcement Administration (DEA). However, there is some evidence that methocarbamol may have abuse potential. It should be used with caution in patients taking other drugs with abuse potential, such as alcohol and drugs that treat sleep disorders.
Does methocarbamol make you sleepy?
Yes, methocarbamol can cause sleepiness. It may affect your ability to think or to do physical abilities such as operating machinery or driving a motor vehicle. While taking methocarbamol, you should avoid taking other drugs that have similar effects, such as alcohol and medicines that treat sleep disorders.
Does methocarbamol cause weight gain?
Methocarbamol is not known to cause weight gain. The most common side effects of methocarbamol are drowsiness or dizziness. It can also cause headaches in some people.
What is Ardosons called in the U.S?
Ardosons, a medication reportedly from Mexico, has no FDA-approved equivalent combination product in the U.S. According to a published case report, each capsule may contain indomethacin 25 mg, betamethasone 0.75 mg and methocarbamol 215 mg. The FDA warns that imported, unapproved drugs may have uncertain identity, strength and safety. Continue reading

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Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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