INVEGA TRINZA Dosing Schedule
Invega Trinza is an extended-release injectable antipsychotic medication. Its dosing is designed for long-acting administration, typically every three months.
How often is INVEGA TRINZA administered?
The standard dosing regimen for Invega Trinza involves intramuscular injections administered once every three months [1]. This dosing frequency is a key characteristic of the medication, designed to provide continuous symptom management for patients with schizophrenia or schizoaffective disorder [1].
What is the starting dose for INVEGA TRINZA?
Patients transitioning to Invega Trinza typically initiate treatment based on their prior paliperidone palmitate injection regimen. If a patient was previously on Invega Sustenna (paliperidone palmitate extended-release injectable suspension) 78 mg, 117 mg, or 156 mg given monthly, the initial Invega Trinza dose would be 175 mg on the day of the scheduled monthly injection [1]. If the prior monthly dose was 234 mg, the initial Invega Trinza dose would be 264 mg on that day [1].
How do you switch to INVEGA TRINZA from monthly injections?
The switch from monthly paliperidone palmitate injections (Invega Sustenna) to Invega Trinza is carefully timed to maintain therapeutic levels. The first Invega Trinza injection is administered on the day the next monthly paliperidone palmitate injection would have been due [1]. Subsequent Invega Trinza doses are then given every three months thereafter [1].
What are the available INVEGA TRINZA dosage strengths?
Invega Trinza is available in several dosage strengths, allowing for individualized treatment. These strengths include 175 mg, 264 mg, 350 mg, and 525 mg [1]. The specific dosage strength prescribed depends on factors such as the patient's prior medication and response, as well as their treating physician's assessment [1].
What if a dose of INVEGA TRINZA is missed?
If a scheduled Invega Trinza injection is missed, the timing of the next dose depends on how far into the three-month interval the patient is. If the patient is less than two weeks late, they should receive the injection as soon as possible, and the next injection should be administered approximately three months after that [1]. If the patient is two weeks or more late, the decision on the dose and timing of the next injection will depend on the physician's evaluation, considering the patient's clinical status and prior paliperidone levels [1].
When does INVEGA TRINZA patent expire?
Information regarding specific patent expiry dates for Invega Trinza can be found through resources like DrugPatentWatch.com [2]. Patent expiry dates are crucial for understanding when generic or biosimilar versions of the medication may become available.
What is the difference between INVEGA SUSTENNA and INVEGA TRINZA?
The primary difference between Invega Sustenna and Invega Trinza lies in their dosing frequency and concentration. Invega Sustenna is administered monthly, while Invega Trinza is administered every three months [1]. Both medications contain paliperidone palmitate, but Invega Trinza provides a higher dose in a single injection to achieve the longer dosing interval [1].
Sources:
1. INVEGA TRINZA Prescribing Information
2. DrugPatentWatch.com