What is Pristiq?
Pristiq (desvenlafaxine) is a medication used to treat major depressive disorder (MDD), a mental health condition characterized by a long-lasting and intense feeling of sadness or lack of interest in everyday activities.
MDD affects daily life and may include symptoms like changes in weight or appetite, trouble sleeping, feelings of guilt, and trouble concentrating.
Pristiq works by increasing levels of two chemicals in the brain, serotonin and norepinephrine, which can help improve mood and alleviate symptoms of depression.
It is important not to use Pristiq with certain other medications, such as monoamine oxidase inhibitors (MAOIs), because of the risk of serious interactions.
Pregnant women and those with certain medical conditions should use Pristiq carefully and under medical supervision.
How Does Pristiq Work?
Pristiq helps treat depression by balancing certain chemicals in the brain called serotonin and norepinephrine.
These chemicals are involved in regulating mood and emotions. Pristiq is known as an SNRI, which stands for serotonin and norepinephrine reuptake inhibitor.
This means it prevents these chemicals from being reabsorbed too quickly, allowing them to stay active longer and improve mood.
Pristiq does not interact with many other brain receptors, which helps reduce the risk of side effects.
It is absorbed well when taken by mouth and reaches its highest levels in the blood about 7.5 hours later.
The medication is processed by the liver and mainly eliminated through the urine.
Dosage Information and Usage
Dosage Form and Strengths of Pristiq
- 50 mg: Light pink, square pyramid tablet with “W” over “50” on the flat side
- 100 mg: Reddish-orange, square pyramid tablet with “W” over “100” on the flat side
Usage
Pristiq should be taken exactly as prescribed by your healthcare provider. The usual starting dose for treating major depressive disorder is 50 mg once daily.
You can take Pristiq with or without food, and it’s important to take it at the same time each day. Swallow the tablets whole with fluid; do not crush, chew, or dissolve them.
It may take several weeks to notice improvements in your mood. Do not stop taking Pristiq or change the dose without consulting your doctor.
If you miss a dose, take it as soon as you remember, but skip it if it’s close to the time for your next dose.
Avoid taking more than prescribed, and seek immediate medical help if you take too much.
Storage Information
Keep Pristiq tablets at room temperature, between 20°C to 25°C (68°F to 77°F).
Store the tablets in their original package and keep them in a dry place away from moisture.
The tablets come in two strengths: 50 mg and 100 mg of desvenlafaxine.
Side Effects
Common Side Effects
- Nausea
- Headache
- Dry mouth
- Sweating
- Tiredness
- Diarrhea
- Vomiting
- Anxiety
- Dizziness
- Tremor
- Insomnia
- Dilated pupils
- Constipation
- Decreased sex drive
- Loss of appetite
- Delayed orgasm and ejaculation
- Sleepiness
- Feeling that your surroundings are spinning or moving
Serious but Rare Side Effects
- New or worsened high blood pressure
- Abnormal bleeding or bruising
- Glaucoma (increased eye pressure)
- Increased cholesterol and triglyceride levels
- Discontinuation symptoms (e.g., dizziness, anxiety, nausea, headache, irritability)
- Seizures
- Low sodium levels in the blood (symptoms can include confusion, weakness, and fainting)
- Severe allergic reactions (e.g., swelling of the throat, face, or hands)
Warnings and Precautions
- Clinical Worsening and Suicide Risk: Pristiq may increase the risk of worsening depression and suicidal thoughts or behaviors, especially in children, adolescents, and young adults. It’s essential to monitor patients closely for any changes in mood or behavior.
- Screening Patients for Bipolar Disorder: Pristiq should be used cautiously in patients with bipolar disorder. A thorough psychiatric evaluation is recommended before starting treatment to check for risks of manic or mixed episodes.
- Serotonin Syndrome or NMS-like Reactions: Pristiq can cause serotonin syndrome, a potentially life-threatening condition characterized by agitation, hallucinations, rapid heart rate, and muscle rigidity. Symptoms similar to Neuroleptic Malignant Syndrome (NMS) can also occur. Monitor for these signs and discontinue Pristiq if they appear.
- Elevated Blood Pressure: Regular blood pressure monitoring is necessary while taking Pristiq, as it can increase blood pressure. If high blood pressure occurs, consider dose adjustment or discontinuation.
- Abnormal Bleeding: Pristiq may increase bleeding risk, especially if taken with other medications that affect blood clotting. Watch for unusual bleeding or bruising and consult your healthcare provider if these occur.
- Narrow-angle Glaucoma: Pristiq may increase eye pressure, so it should be used with caution in patients at risk for narrow-angle glaucoma. Monitor eye health regularly.
- Activation of Mania/Hypomania: Pristiq can trigger manic or hypomanic episodes in some patients. Use with caution in individuals with a history of these conditions.
- Cardiovascular/Cerebrovascular Disease: Patients with heart disease or high blood pressure should use Pristiq cautiously. It may increase heart rate and blood pressure.
- Serum Cholesterol and Triglyceride Elevation: Pristiq may raise cholesterol and triglyceride levels. Regular monitoring of serum lipids is recommended.
- Discontinuation of Treatment: Stopping Pristiq suddenly can cause withdrawal symptoms such as dizziness, nausea, and insomnia. Gradual dose reduction is advised to minimize these effects.
- Renal Impairment: Patients with severe kidney problems should have their dose adjusted. Pristiq can accumulate in the body, potentially causing side effects.
- Seizure: Use Pristiq cautiously in patients with a history of seizures, as it may increase seizure risk.
- Hyponatremia: Pristiq can cause low sodium levels, which may lead to symptoms like headache, confusion, and dizziness. This risk is higher in elderly patients and those on diuretics.
- Co-administration of Drugs Containing Desvenlafaxine and Venlafaxine: Avoid using Pristiq with other medications containing desvenlafaxine or venlafaxine due to potential interactions.
- Interstitial Lung Disease and Eosinophilic Pneumonia: Rare cases of lung disease linked to Pristiq have been reported. Patients experiencing symptoms like persistent cough or chest discomfort should see a doctor immediately and consider stopping the medication.
Overdosage
In cases of Pristiq overdose, serious problems are rare.
There have been some reports of people who took too much and had issues like headache, vomiting, agitation, dizziness, nausea, constipation, diarrhea, dry mouth, numbness, and a rapid heartbeat.
Most people who overdose on Pristiq recover with medical treatment. If you think you or someone else has taken too much Pristiq, it is important to get medical help right away.
Treatment usually involves supportive care, like monitoring vital signs and providing oxygen if needed.
In some cases, doctors might use activated charcoal to help prevent the drug from being absorbed further.
Drug Interactions With Other Medications
- Central Nervous System (CNS)-Active Agents: Using Pristiq alongside other CNS-active drugs has not been thoroughly studied. Therefore, it’s important to be careful when combining these medications, as they may intensify side effects like drowsiness or confusion.
- Monoamine Oxidase Inhibitors (MAOIs): Serious side effects have been noted in patients who recently stopped taking MAOIs before starting antidepressants like Pristiq. MAOIs are a type of medication that can cause high blood pressure and other issues if not timed correctly with other drugs.
- Serotonergic Drugs: Be cautious if taking Pristiq with other medications that affect serotonin, a brain chemical that regulates mood. Combining these can increase the risk of serotonin syndrome, a potentially life-threatening condition characterized by confusion, rapid heart rate, and muscle spasms.
- Drugs that Interfere with Bleeding (e.g., NSAIDs, Aspirin, Warfarin): Medications like NSAIDs or aspirin can increase the risk of bleeding when taken with Pristiq. These drugs affect blood clotting, and using them together could lead to serious bleeding issues.
- Ethanol (Alcohol): While studies suggest that Pristiq does not worsen alcohol’s effects on mental and motor skills, it’s best to avoid alcohol when taking this medication, as it can still impair your overall functioning.
- CYP3A4 Inhibitors (e.g., Ketoconazole): Drugs like ketoconazole can increase the level of Pristiq in the blood. This means taking them together might cause more side effects due to higher medication concentration.
- CYP2D6 Metabolized Drugs (e.g., Desipramine): Pristiq may raise the levels of certain drugs that are broken down by CYP2D6, potentially leading to increased side effects of those medications.
- CYP3A4 Metabolized Drugs (e.g., Midazolam): When Pristiq is taken with drugs processed by CYP3A4, such as midazolam, their levels may decrease, making them less effective.
- P-glycoprotein Transporter: Pristiq does not affect or is affected by drugs that rely on the P-glycoprotein transporter for moving substances across cells. This means it is unlikely to alter how these other medications work in the body.
- Electroconvulsive Therapy: There is no clear information available on the safety of using Pristiq during electroconvulsive therapy, a treatment for severe depression.
- Drug-Laboratory Test Interactions: Patients taking Pristiq may receive false-positive results for tests checking for illegal drugs like PCP and amphetamines due to the way these tests are designed. Confirmatory tests can clarify these results.
Alternative Medications
- Wellbutrin XL (bupropion)
- Prozac (fluoxetine)
- Zoloft (sertraline)
- Lexapro (escitalopram)
- Rexulti (brexpiprazole)
- Trintellix (vortioxetine)
- Vraylar (cariprazine)
- Xadago (safinamide)
- Zelapar (selegiline hydrochloride)
Cost & Coupons
At Pharma Giant, your health is our top priority, and we believe that accessing the right medications shouldn’t strain your finances.
Our mission is to offer high-quality medications like Pristiq at competitive prices, making healthcare more affordable for everyone.
Exceptional Savings on Pristiq
Pharma Giant offers significant savings on Pristiq to help you manage your health without breaking the bank. In the U.S., Pristiq can cost as much as $600 for 30 tablets, but with Pharma Giant, you can save substantially.
Pristiq (Desvenlafaxine Succinate) Pricing:
| Strength | Quantity | Price (USD) |
|---|---|---|
| 50mg or 100mg | 30 tabs | $123.00 |
| 60 tabs | $240.00 | |
| 90 tabs | $351.00 |
Special Discount Offer
Coupon Code: Use PGSAVE10 at checkout to get a 10% discount on your Pristiq order. This special offer is limited-time, so save on your important medications without compromising quality.
Offer Details: The discount can be used once per customer, so make sure to take advantage while it lasts!
Ordering Information
Prescription Required: A valid prescription is needed to buy Pristiq, ensuring patient safety and adherence to medical guidelines.
Bulk Purchases: You can order up to a 90-day supply, making it easier to manage ongoing treatment and save money.
Quality Assurance and Fast Delivery
At Pharma Giant, we ensure that you receive high-quality medication with the added convenience of fast delivery straight to your door.
- Express Shipping: Medications are shipped from Canada to anywhere in the U.S. within 3-5 business days, so you receive your order quickly.
- Secure Packaging: Each order is packed in safe, tamper-proof containers to keep your medication secure during shipping.
Why Choose Pharma Giant?
With Pharma Giant, you can prioritize your health without worrying about high costs. Enjoy great value, exceptional service, and the peace of mind that comes with affordable healthcare solutions.
Frequently Asked Questions
Disclaimer
Pharma Giant provides medical information to help you better understand medications and medical conditions.This content is for informational use only and does not replace advice from a licensed medical practitioner. Consult your doctor or pharmacist before starting or changing any medication. All our partners follow strict safety standards set by their country’s health authorities to make sure you receive safe and high-quality medications.
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