Standard Aristada Dosing Schedule
Aristada (aripiprazole lauroxil), a long-acting injectable antipsychotic for schizophrenia, is administered intramuscularly every 4 to 8 weeks. The exact interval depends on the dose strength:
- 441 mg: Every 4 weeks
- 882 mg: Every 4 or 6 weeks
- 1064 mg: Every 8 weeks
Dosing starts with a single 661 mg dose of Aristada Initio on day 1, plus an oral aripiprazole on days 1 and 21 for initiation.[1]
Why These Intervals Differ
Higher doses like 1064 mg provide longer-lasting blood levels of aripiprazole, allowing less frequent injections (every 8 weeks). Lower doses require monthly (every 4 weeks) administration to maintain steady levels. Providers select based on patient response, tolerability, and adherence needs.[1][2]
Adjustments for Missed Doses
Administer the next dose as soon as possible, then resume the original schedule. If more than the interval has passed (e.g., >4 weeks for 441 mg), give oral aripiprazole until the next injection.[1]
Comparison to Other Long-Acting Injectables
Aristada's 4-8 week flexibility contrasts with monthly options like Invega Sustenna (every 4 weeks) or bimonthly Abilify Maintena (every 4 weeks standard, up to 8 weeks extended). Aristada's prodrug form converts slowly in the body for sustained release.[2]
Patient Considerations and Administration
Injections go into the gluteal or deltoid muscle by healthcare professionals only. No self-administration. Common queries include pain at site (mild, temporary) and ensuring no recent oral antipsychotic overlap to avoid excess exposure.[1][3]
[1] Aristada Prescribing Information
[2] Drugs.com - Aristada Dosing
[3] FDA Label for Aristada