Mysoline Oral

In Depth

Generic Name: PRIMIDONE - ORAL
Pronounced: (PRY-meh-doan)

Mysoline Oral Side Effects

Dizziness, sleepiness, drowsiness, tiredness, loss of appetite, nausea, vomiting, or staggering walk/clumsiness may occur when you first start taking the medication, but tend to disappear over time (usually in a few weeks). If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

mental/mood changes
decreased sexual ability/interest
double vision
swollen eyelids
leg swelling

Tell your doctor immediately if any of these rare but very serious side effects occur:

fever
chills
persistent sore throat
easy bruising/bleeding
severe tiredness/weakness
pale skin
fast breathing

This medication may rarely cause a serious immune system problem (systemic lupus erythematosus). Tell your doctor immediately if you experience any of these unlikely but serious side effects:

unusual tiredness
joint/muscle aches
unusual fever
butterfly-shaped facial rash
swollen glands
bloody/pink urine
swelling of the feet/ankles (edema)

This medication rarely may cause mood or behavior changes, such as anxiety, agitation, hostility, pressured/rapid speech, or thoughts of suicide. Tell your doctor immediately if you develop unusual (possibly sudden) mood changes.

Your doctor may need to order special tests if you experience these symptoms. Keep all laboratory and medical appointments.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction:

rash
itching
swelling
severe dizziness
trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Mysoline Oral Medical Alert

Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-800-854-1166 (USA) or 1-800-668-1507 (Canada).