Pristiq ER is a prescription SNRI antidepressant for adults with major depressive disorder. It works by slowing the reuptake of serotonin and norepinephrine, two neurotransmitters linked to mood. Like most antidepressants, it typically takes a few weeks before the full benefit becomes apparent. Take it exactly as your doctor prescribes.
Pristiq ER contains desvenlafaxine and belongs to the SNRI class of antidepressants. It is taken once daily as an extended-release tablet, which releases the active ingredient gradually throughout the day. It is prescribed for adults with depressive disorder. Response times and outcomes vary between people, and full therapeutic effect generally takes several weeks.
Pristiq ER is prescribed for major depressive disorder (MDD) in adults, specifically to help reduce persistent low mood, loss of interest, and related symptoms. A doctor's assessment and prescription are required before use.
Desvenlafaxine reduces the rate at which serotonin and norepinephrine are cleared from the gaps between nerve cells. With more of these neurotransmitters available, the brain is better able to regulate mood. The mechanism is not fully understood, which is true of most antidepressants.
The standard adult dose is 50 mg once daily. Your doctor will determine what is appropriate for your individual circumstances. Do not change the dose, frequency or length of treatment on your own. Swallow the tablet whole. Unless your doctor or the product label tells you otherwise, do not crush, chew or split it.
Before starting Pristiq ER, give your doctor a full picture of your medical history and a complete list of everything you take, including vitamins and supplements. Key things to know: Desvenlafaxine can interact with other medicines that affect serotonin, which can be serious Blood pressure monitoring may be recommended during treatment Some people experience changes in mood or behavior when starting the medicine or when the dose is adjusted; contact your doctor if this happens Stopping suddenly can cause discontinuation symptoms; any change to treatment should be made with your doctor's guidance Alcohol can worsen some side effects Get medical advice promptly if you develop significant or unexpected symptoms. Common side effects Some people experience nausea, dizziness, dry mouth, constipation, reduced appetite, increased sweating, sleep changes, fatigue or sexual side effects. Many people tolerate the medicine without these, and some effects settle after the first few weeks. Let your doctor know if anything is persistent or concerning.
Store at room temperature, away from heat and moisture. Keep out of reach of children. Do not use tablets that look damaged or unusual.
It is prescribed for major depressive disorder in adults.
No. Desvenlafaxine is an SNRI. It affects both serotonin and norepinephrine, whereas SSRIs target serotonin only.
Exactly as prescribed, once daily. Swallow the tablet whole. It can be taken with or without food.
Not without speaking to your doctor first. Stopping an SNRI abruptly can trigger discontinuation symptoms. Your doctor can guide you through tapering safely if needed.
Some symptoms can improve before others. Full benefit often takes several weeks. There's real variation between individuals.
Yes, and some interactions can be serious, especially with other medicines that affect serotonin. Give your doctor a complete list of what you take.
Dizziness, fatigue and sleep-related effects can occur in some people. Until you know how Pristiq ER affects you, be cautious about driving or operating machinery.
Yes. Pristiq ER is not available over the counter and should be used under medical supervision.