General Information

Primidone is used to control seizures. This is used along with other medications. Controlling seizures lets you do more of your normal daily activities. This lessens your risk of harm when you lose consciousness. Seizures are symptoms of a brain problem. It occurs because of sudden and abnormal activity in the brain.

How does Primidone work?

Primidone works by preventing the excessive electrical activity in the brain. This prevents sodium from entering nerve cells when they begin to fire rapid and repetitive electrical signals. A build-up of sodium in the nerve cells is necessary for the electrical signal to build up. It is also being passed on to other nerve cells. As Primidone prevents this, it helps stabilize the electrical activity in the brain.

Why use Primidone?

Primidone is in the class of drugs called barbiturate anticonvulsants. This controls the abnormal activity in the brain that occurs during a seizure. Primidone also reduces your risk for a possibly life-threatening condition of frequent and repeated seizure. This prescription is approved by the Food and Drug Administration (FDA). Primidone is supplied as tablets for oral use. Each tablet contains Primidone as an active ingredient with the strengths of 50 mg and 250 mg.

How to use Primidone?

This is usually taken 3 to 4 times a day. The medicine is to be taken by mouth with a full glass of water. You may take each dose with or without food. Take it with food or milk if stomach upset occurs. Remember to take each dose at the same way and at the same time each day. The recommended dosage is based on your age, medical condition and response. Take Primidone exactly as it is prescribed. Do not take more or less than it is given by your doctor.

What are the side effects of Primidone?

  • Drowsiness
  • Dizziness
  • Blurred vision
  • Spinning sensation
  • Irritability
  • Skin rash
  • Loss of appetite
  • Nausea
  • Vomiting
  • Impotence
  • Loss of balance or coordination
  • Unusual weakness

Warnings and Precautions

  • This medication may contain an inactive ingredient that causes an allergic reaction. Tell your doctor if you have any allergies.
  • Do not suddenly stop taking Primidone even if you feel well. It may worsen your condition. 
  • If you have a medical history or current medications, inform your doctor.
  • Consult your doctor first if you are pregnant or breastfeeding women.
  • If there are any signs of an allergic reaction or overdose, call for medical help right away.
  • Keep this medication at room temperature away from heat and moisture.