Invega Injection Dosage Information
The dosage of Invega injection depends on the specific formulation and the patient's condition. Invega Sustenna is an intramuscular injection, and the typical starting dose for schizophrenia in adults is 234 mg on day 1, followed by 156 mg one week later, and then 78 mg or 156 mg every two weeks thereafter [1]. For schizoaffective disorder, the initial doses are the same, with subsequent dosing of 78 mg or 156 mg every two weeks [1].
What is the difference between Invega Sustenna and Invega Trinza?
Invega Sustenna is administered every two weeks, while Invega Trinza is a long-acting injectable that is administered every three months [2]. Invega Trinza is typically used for the maintenance treatment of schizophrenia in patients who have been adequately treated with Invega Sustenna for at least four months [3]. The recommended dose for Invega Trinza is 1094 mg administered intramuscularly every three months [2].
How is Invega injection administered?
Invega injections, both Sustenna and Trinza, are administered intramuscularly by a healthcare professional [1][3]. These injections are designed for long-acting delivery, meaning they release the medication slowly over an extended period [1][3].
What is the maximum dosage for Invega injection?
For Invega Sustenna, the highest recommended dose is 234 mg [1]. For Invega Trinza, the recommended dose is 1094 mg every three months [2].
When can patients switch to Invega Trinza from Invega Sustenna?
Patients can switch to Invega Trinza from Invega Sustenna after they have been adequately treated with Invega Sustenna for at least four months [3]. The specific dosing schedule for switching should be determined by a healthcare provider.
What are the potential side effects of Invega injection?
Common side effects of Invega injections may include injection site reactions, weight gain, and movement disorders such as tardive dyskinesia [1]. It is important for patients to discuss any concerns about side effects with their healthcare provider.
How long does Invega injection stay in the system?
As a long-acting injectable, Invega Sustenna releases medication over a two-week period, and Invega Trinza releases medication over a three-month period [1][3]. The exact duration the active drug remains in the system can vary based on individual metabolism and other factors.
Where can I find information on Invega injection patents?
Information on Invega injection patents can be found through resources that track pharmaceutical patents, such as DrugPatentWatch.com [4]. These resources can provide details on patent status, expiry dates, and any associated litigation.
Sources:
[1] https://www.invegahcp.com/sustenna/dosing-administration
[2] https://www.invegahcp.com/trinza/dosing-administration
[3] https://www.invegahcp.com/trinza/switching-dosing
[4] https://drugpatentwatch.com/