Robaxin contains one active ingredient: methocarbamol 500 mg to relax tense back muscles. Methocarbamol is a muscle relaxant that reduces muscle spasms.
Methocarbamol 500 mg
Corn starch, magnesium stearate, povidone, sodium lauryl sulfate, sodium starch glycolate, stearic acid.
Keep out of reach of children. In case of overdose, call a poison control centre or get medical help right away. Ask a doctor or pharmacist before use if you have kidney or liver disease; take drugs for depression, sedatives or any other medication; are pregnant or breastfeeding.
When using this product, you may experience drowsiness; dizziness; light headedness. Do not drive or operate machinery; do not drink alcohol; do not take more than the recommended dose unless advised by your doctor. Nausea may occur.
Stop use and ask a doctor if symptoms worsen or last more than 5 days; if you get a rash or itchy skin; if any unusual symptoms occur.
Adult Initial Dosage:
Take 3 tablets, every 6 hours. Do not exceed 12 tablets in 24 hours.
Adult Maintenance Dosage:
Take 2 tablets, every 6 hours. Do not exceed 8 tablets in 24 hours
caution: muscle relaxants (methocarbamol) can cause side effects such as drowsiness, dizziness, lightheadedness, stomach upset, nausea/vomiting, or blurred vision. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Talk to your doctor or one of our pharmacists to see if this medication is right for you.
Muscle relaxants, like methocarbamol in Robaxin, can interact with other medications, vitamins, or herbs you may be taking. An interaction is when a substance changes the way another medication works. This can be harmful or prevent the medications from working well.
To help avoid interactions, speak with your doctor or one of pharmacists. We can limit potential medications interactions with care by helping to personalize medications to you. Be sure to tell our pharmacists about all medications, vitamins, or herbs you’re taking. To find out how this drug might interact with something give one of our pharmacists a call.
Drinking alcohol can increase the sedating effect of this drug and many others. If you drink alcohol, it is important to let your doctor and our pharmacy team know.
Interactions that increase the risk of side effects:
Taking Robaxin with certain drugs that also cause drowsiness raises your risk of this side effect. Examples of these drugs include:
Anxiety drugs: such as lorazepam, diazepam, clonazepam, or alprazolam.
Pain killers: particularly opiates such as oxycodone, hydromorphone, hydrocodone, tramadol, codeine or morphine.
Certain antidepressants: such as amitriptyline, nortriptyline, doxepin, and imipramine.
Antipsychotics: such as chlorpromazine, haloperidol, ripseridone, olanzapine or quetiapine
Over-the-counter products: such as kava-kava, valerian root, gravol (dimenhydrinate) or Benadryl (diphenhydramine).
*This is few examples of potential interactions. If you would like to learn more about if Robaxin is right for you please speak to one of our pharmacy team members
Warnings for other groups:
For pregnant women: Methocarbamol found in Robaxin is a category C pregnancy drug. That means two things:
Research in animals has shown adverse effects to the fetus when the mother takes the drug.
There haven’t been enough studies done in humans to be certain how the drug might affect the fetus.
Talk to your doctor if you’re pregnant or planning to become pregnant. This drug should be used only if the potential benefit justifies the potential risk to the fetus.
For women who are breastfeeding: Methocarbamol may pass into breast milk and may cause side effects in a child who is breastfed. Talk to your doctor if you breastfeed your child. You may need to decide whether to stop breastfeeding or stop taking this medication.
For seniors: The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects. It may be wise to start on a lower dose or a different dosing schedule. This can help keep levels of this drug from building up too much in your body.
For children: This medication should not be used in people younger than 16 years of age.