Common Side Effects of Aristada
Aristada (aripiprazole lauroxil), an extended-release injectable antipsychotic for schizophrenia, most often causes restlessness (akathisia) in up to 17% of patients, injection-site reactions like pain or swelling in 5-10%, and weight gain averaging 1-2 kg over months.[1][2] Other frequent effects include headache (12%), insomnia (11%), and nausea (9%), typically mild and decreasing after the first few doses.
Serious Risks and What to Watch For
In clinical trials, serious side effects included tardive dyskinesia (involuntary movements, risk 3-5% long-term), neuroleptic malignant syndrome (rare, with fever, rigidity, potential fatality), and severe allergic reactions.[1] Orthostatic hypotension drops blood pressure upon standing, affecting 2-5%, while seizures occurred in under 1% of users with seizure history.[2] Suicidal thoughts are monitored closely in young adults during initial treatment.
Metabolic and Cardiovascular Concerns
Aristada raises risks of high blood sugar (hyperglycemia, 5-10%), elevated cholesterol/triglycerides (up to 15%), and diabetes onset, especially in those with predispositions. Heart-related issues like QT prolongation (2%) or sudden cardiac events are possible but rare; monitoring is advised for patients with cardiac history.[1][3]
Why Movement Disorders Happen and How Common Are They
Akathisia and parkinsonism (tremors, stiffness) stem from dopamine blockade in the brain, hitting 10-20% early on but often improving with dose tweaks or adjunct meds like benztropine. Extrapyramidal symptoms overall affected 15% in trials versus 7% on placebo.[2]
Side Effects in Special Populations
Elderly patients with dementia-related psychosis face 1.6 times higher mortality risk from cerebrovascular events or infections (FDA black box warning).[1] Pregnancy data is limited; use only if benefits outweigh risks, with neonatal withdrawal possible. No major differences by race or sex, but slower metabolism in liver-impaired patients increases exposure.[3]
Managing or Reducing Side Effects
Start with 441 mg monthly dose; switching from oral antipsychotics minimizes overlap issues. Prophylactic anticholinergics curb movement effects. Report persistent symptoms immediately—dose reduction or discontinuation resolves most.[1][2]
[1]: Aristada Prescribing Information (Alkermes, 2023)
[2]: FDA Label for Aristada
[3]: Drugs.com - Aristada Side Effects