Administer the Missed Uzedy 100mg Injection Today Without Supplementation
When a dose of Uzedy is missed, administer the next injection as soon as possible without any additional oral risperidone supplementation or loading doses 1.
Key Management Points
The FDA-approved prescribing information for Uzedy explicitly addresses missed doses with straightforward guidance: simply give the next scheduled injection as soon as possible, without administering more frequently than the recommended monthly interval 1. This differs significantly from some other long-acting injectable antipsychotics that may require oral supplementation or complex bridging strategies.
Why No Supplementation is Needed
Uzedy's unique pharmacokinetic profile eliminates the need for oral supplementation. Unlike the older risperidone long-acting intramuscular injection (which required 3 weeks of oral overlap), Uzedy is designed as a subcutaneous extended-release formulation that maintains therapeutic drug levels without additional oral medication 1, 2, 3. The drug label specifically states: "Neither a loading dose nor supplemental oral risperidone doses are recommended when switching" to Uzedy 1.
Practical Administration Steps
For your patient presenting today after missing last month's injection:
- Administer the 100mg Uzedy injection subcutaneously today (abdominal or upper arm site)
- Resume the monthly schedule from today's date going forward
- Do not give any oral risperidone before, during, or after the injection
- Monitor clinically for symptom control over the next 2-4 weeks
Clinical Monitoring Considerations
While supplementation isn't required, you should assess your patient's current clinical status. If she's experiencing breakthrough manic or depressive symptoms after missing the dose, the injection alone should re-establish therapeutic levels within days to weeks 1, 3. However, if she's acutely symptomatic and requires immediate intervention, short-term oral risperidone could be considered as a clinical judgment call (though not FDA-mandated), with close monitoring for additive side effects 1.
Important Caveats
The "do not administer more frequently than recommended" instruction is critical 1. Even though she missed a dose, you cannot "double up" or give injections closer than monthly intervals. The extended-release formulation has a long half-life that makes frequent dosing both unnecessary and potentially unsafe due to accumulation risk 2, 3.
For bipolar disorder specifically, Uzedy is approved only as a once-monthly injection (not the every-2-month option available for schizophrenia) 1, so maintain the monthly schedule going forward.