Tetrabenazine Side Effects
What should I watch for?
Visit your doctor or health care professional for regular checks on your progress. It may be several weeks before you see the full effects of this medicine.
Patients and their families should watch out for worsening depression or thoughts of suicide. If this happens, especially at the beginning treatment or after a change in dose, call your health care professional.
You may get dizzy or drowsy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol can increase dizziness and drowsiness. Avoid alcoholic drinks.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Body aches or pain
difficulty in breathing
difficulty with swallowing
fear or nervousness
feeling sad or empty
inability to sit still
lack of appetite
loss of balance control
loss of interest or pleasure
loss of voice
need to keep moving
relaxed and calm
sleepiness or unusual drowsiness
slow movement or reflexes
stiffness of arms and legs
tic-like (jerky) movements of the head, face, mouth, and neck
trembling and shaking of fingers and hands
trouble with balance
unable to sleep
unusual tiredness or weakness
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
fixed position of the eye
inability to move eyes
increased blinking or spasms of the eyelid
mood or mental changes
seeing, hearing, or feeling things that are not there
shakiness in legs, arms, hands, or feet
sticking out of tongue
trembling or shaking of hands or feet
uncontrolled twisting movements of neck, trunk, arms, or legs
unusual facial expressions
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
large, flat, blue, or purplish patches in the skin
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.