Flexura 400 mg, containing metaxalone, is a muscle relaxant used to relieve discomfort from muscle spasms, strains, or sprains. While generally well-tolerated, it can cause side effects ranging from mild to serious.
Common Side Effects
These are typically mild and may lessen as your body adjusts to the medication:
- Drowsiness
- Dizziness
- Headache
- Nausea or vomiting
- Upset stomach
- Irritability or nervousness
Taking Flexura with food can increase drowsiness and dizziness. It’s advisable to avoid activities that require alertness, such as driving, until you know how the medication affects you.
Serious Side Effects
Though rare, some side effects require immediate medical attention:
Allergic reactions
Symptoms include rash, itching, swelling (especially of the face, tongue, or throat), severe dizziness, and difficulty breathing.
Serotonin syndrome
There have been case reports where taking too much metaxalone led to serotonin syndrome.
Signs include agitation, hallucinations, fever, sweating, shivering, rapid heartbeat, muscle stiffness, twitching, loss of coordination, nausea, vomiting, or diarrhea.
Liver issues
Indicators are yellowing of the skin or eyes (jaundice), dark urine, upper stomach pain, and loss of appetite.
Blood disorders
Symptoms may include unusual tiredness, pale skin, or signs of infection like fever and sore throat.
Precautions
- Pre-existing conditions: Flexura is not recommended for individuals with severe liver or kidney disease, or certain types of anemia.
- Pregnancy and breastfeeding: Use during pregnancy or while breastfeeding should only occur if clearly needed and prescribed by a doctor.
- Alcohol and CNS depressants: Combining Flexura with alcohol or other central nervous system depressants can increase drowsiness and dizziness.
It’s important to be aware of potential side effects and consult your doctor if you experience any unusual symptoms. Always follow their instructions regarding dosage and duration of use.