Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
You should not use Robaxin-500 if you are allergic to it.
To make sure Robaxin-500 is safe for you, tell your doctor if you have:
- myasthenia gravis; or
- if you also use a narcotic (opioid) medication.
Using Robaxin-500 during early pregnancy may cause birth defects. Tell your doctor if you are pregnant or if you become pregnant while using Robaxin-500.
It is not known whether methocarbamol passes into breast milk or if it could affect the nursing baby. Tell your doctor if you are breast-feeding.
Robaxin-500 is not approved for use by anyone younger than 16 years old.
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using Robaxin-500 and call your doctor at once if you have:
- a light-headed feeling, like you might pass out;
- slow heartbeats;
- fever, chills, flu symptoms;
- a seizure (convulsions); or
- jaundice (yellowing of your skin or eyes).
Common side effects may include:
- dizziness, drowsiness;
- nausea, vomiting, upset stomach;
- flushing (warmth, redness, or tingly feeling);
- confusion, problems with memory;
- blurred vision, double vision;
- sleep problems (insomnia); or
- lack of coordination.