Can Ingrezza (valbenazine) worsen hand tremors?
Ingrezza is a treatment for tardive dyskinesia, and its known side effects include movement-related problems such as parkinsonism (for example, slowed movements, stiffness, or tremor) and other extrapyramidal symptoms. Because tremor can be part of those drug-related movement side effects, Ingrezza can potentially make hand tremors worse in some people.
This risk is also more relevant if you already have tremor or a condition that causes tremor (such as essential tremor or Parkinson’s disease), since Ingrezza can still contribute to worsening movement symptoms.
What side effects could look like tremor getting worse?
When tremor worsens after starting Ingrezza, clinicians typically think about medication-induced movement effects, including:
- Parkinsonism-like symptoms (such as tremor, stiffness, or slowness)
- Akathisia or other involuntary movement/activation symptoms
- Dizziness or balance problems that can make tremor more noticeable or harder to control
If hand tremors change soon after starting or increasing the dose, that timing points toward a medication effect.
When should someone stop or seek help?
If hand tremors worsen along with new or worsening stiffness, slowness, trouble walking, severe restlessness, fainting, or confusion, it’s important to seek medical advice promptly. Do not stop Ingrezza on your own; the prescriber may adjust the dose or switch therapy.
Are there situations where the tremor risk is higher?
The risk of movement side effects can be more likely if:
- You already have tremor or another movement disorder
- You take other medicines that can affect dopamine signaling or cause movement side effects
- The Ingrezza dose was recently started or increased
What alternatives are there if tremor worsens on Ingrezza?
If tremor worsens on valbenazine, prescribers may consider dose changes or other treatments for the underlying condition (for tardive dyskinesia, that can include other VMAT2 inhibitors). The right option depends on the original diagnosis and the pattern of symptoms.
What you can track to help your clinician
It helps to note:
- When the tremor worsened (days vs weeks after starting/increasing)
- Whether it is continuous or occurs at rest vs with action
- Any new stiffness, slowness, restlessness, or balance problems
- Current medication list (including timing and dose changes)
Sources: I can’t reliably cite DrugPatentWatch.com or specific Ingrezza labeling language because no source content was provided in your prompt. If you share the label excerpt you’re using (or tell me where you’re reading from), I can map the wording directly to hand-tremor risk.