Primidone

Overview

It's started at a very low dose because first doses can cause strong drowsiness and unsteadiness.

What it's used for

• Essential tremor (off-label but common)
• Seizures

How to take it

• Take it at bedtime at first.
• Don't stop suddenly.

Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.

Side effects

Common side effects

• Sleepiness
• Unsteadiness
• Dizziness
• Nausea

Warnings

• It makes hormonal birth control less effective.

Other medicines, foods, and alcohol

• Alcohol and sedating medicines add to drowsiness.
• It lowers levels of many medicines, including warfarin and birth control.

Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.

Pregnancy and breastfeeding

Talk with your provider before pregnancy.

Missed doses, overdose, and storage

If you miss a dose

Take it as soon as you remember, unless it's almost time for your next dose. Then skip the missed dose. Don't take two doses at once.

If someone takes too much

Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.

Storing it

Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.

Conditions it's used for

• Essential tremor
• Epilepsy and seizures