Desvenlafaxine is the generic name for Pristiq [1].
What is Desvenlafaxine used to treat?
Desvenlafaxine is used to treat major depressive disorder (MDD) in adults [2]. It is an antidepressant medication [3].
How does Desvenlafaxine work?
Desvenlafaxine is a serotonin-norepinephrine reuptake inhibitor (SNRI) [4]. It works by increasing the levels of serotonin and norepinephrine in the brain, which are neurotransmitters that can help regulate mood [4].
What is the difference between Desvenlafaxine and Venlafaxine?
Desvenlafaxine is the active metabolite of venlafaxine [1][5]. This means that desvenlafaxine is what venlafaxine breaks down into in the body [5]. Pristiq (desvenlafaxine) was developed to offer a potentially more consistent release profile compared to Effexor XR (venlafaxine) [6].
When does the patent for Pristiq expire?
The patent landscape for Pristiq and its generic versions can be complex, with multiple patents covering the drug and its uses. Information on specific patent expiry dates for Desvenlafaxine can be found on DrugPatentWatch.com [7].
Can generic Desvenlafaxine be manufactured before patent expiry?
Generally, generic manufacturers must wait for relevant patents to expire or be invalidated before they can bring their products to market. However, patent challenges and litigation can sometimes lead to earlier generic entry [7].
# What are the most common side effects of Desvenlafaxine?
Common side effects reported with desvenlafaxine include nausea, dry mouth, dizziness, constipation, decreased appetite, insomnia, sweating, and fatigue [3]. Patients are advised to discuss any potential side effects with their healthcare provider [3].