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More about Pristiq

Desvenlafaxine is used to treat depression. It may improve your mood, feelings of well-being, and energy level. Desvenlafaxine is known as a serotonin-norepinephrine reuptake inhibitor (SNRI). It works by helping to restore the balance of certain natural substances (serotonin and norepinephrine) in the brain.
Read the Medication Guide and, if available, the Patient Information Leaflet provided by your pharmacist before you start taking desvenlafaxine and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Take this medication by mouth with or without food as directed by your doctor, usually once daily. The dosage is based on your medical condition and response to treatment. Do not crush, chew, or dissolve this medication in water. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split the tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing. To reduce your risk of side effects, your doctor may direct you to start this medication at a low dose and gradually increase your dose. Follow your doctor's instructions carefully. Do not increase your dose or use this drug more often or for longer than prescribed. Your condition will not improve any faster, and your risk of side effects will increase. Use this medication regularly to get the most benefit from it. To help you remember, use it at the same time each day. It is important to continue taking this medication even if you feel well. Do not stop taking this medication without consulting your doctor. Some conditions may become worse when this drug is suddenly stopped. Also, you may experience symptoms such as mood swings, headache, tiredness, sleep changes, and brief feelings similar to electric shock. To prevent these symptoms while you are stopping treatment with this drug, your doctor may reduce your dose gradually. Consult your doctor or pharmacist for more details. Report any new or worsening symptoms right away. If you are switching from another antidepressant to desvenlafaxine, your doctor should slowly reduce the dose of your old antidepressant to prevent withdrawal reactions from the other antidepressant. Ask your doctor or pharmacist for more details. It may take several weeks before you get the full benefit of this medication. Tell your doctor if your condition does not improve or if it worsens.
See also Warning section. Drowsiness, dizziness, nausea, dry mouth, constipation, loss of appetite, weight loss, blurred vision, nervousness, trouble sleeping, or excessive sweating may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. This medication may raise your blood pressure. Check your blood pressure regularly and tell your doctor if the results are high. An empty tablet shell may appear in your stool. This effect is harmless because your body has already absorbed the medication. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: severe/pounding headache, shakiness (tremor), decreased interest in sex, changes in sexual ability, easy bruising/bleeding. Get medical help right away if you have any very serious side effects, including: cough that doesn't go away, shortness of breath, chest pain, black stools, vomit that looks like coffee grounds, eye pain/swelling/redness, widened pupils, vision changes (such as seeing rainbows around lights at night), seizures. This medication may increase serotonin and rarely cause a very serious condition called serotonin syndrome/toxicity. The risk increases if you are also taking other drugs that increase serotonin, so tell your doctor or pharmacist of all the drugs you take (see Drug Interactions section). Get medical help right away if you develop some of the following symptoms: fast heartbeat, hallucinations, loss of coordination, severe dizziness, severe nausea/vomiting/diarrhea, twitching muscles, unexplained fever, unusual agitation/restlessness. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug include: other drugs that can cause bleeding/bruising (including antiplatelet drugs such as clopidogrel, NSAIDs such as ibuprofen/naproxen, "blood thinners" such as dabigatran/warfarin). Aspirin can increase the risk of bleeding when used with this medication. However, if your doctor has directed you to take low-dose aspirin for heart attack or stroke prevention (usually at dosages of 81-325 milligrams a day), you should continue taking it unless your doctor instructs you otherwise. Ask your doctor or pharmacist for more details. Taking MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before and at least 7 days after treatment with this medication. Ask your doctor when to start or stop taking this medication. The risk of serotonin syndrome/toxicity increases if you are also taking other drugs that increase serotonin. Examples include street drugs such as MDMA/"ecstasy," St. John's wort, certain antidepressants (including other SNRIs such as duloxetine/milnacipran, SSRIs such as fluoxetine/paroxetine), tryptophan, among others. The risk of serotonin syndrome/toxicity may be more likely when you start or increase the dose of these drugs. Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana (cannabis), drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), or antihistamines (such as cetirizine, diphenhydramine). Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely. Desvenlafaxine is very similar to venlafaxine. Do not use medications containing venlafaxine while using desvenlafaxine. This medication may interfere with certain lab tests (including urine tests for amphetamines), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: severe drowsiness, seizures, fast/irregular heartbeat.
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Frequently Asked Questions

We've compiled a list of commonly asked questions for your convenience. If you are unable to find the answer to your question, please contact us for further assistance. It's just one more way UPRx prioritizes your self-care.


If you are one of half of the US population who benefits from taking prescription drugs, then UPRx is for you. We offer cash medication so you can…

• Bypass high insurance copays.
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• Avoid the hassle of going to the pharmacy to fill your prescriptions.

If any of the above sound as awesome to you as they do to us, we can safely say that UPRx is the alternative for you.
In order to fulfill your order we will need a corresponding prescription. However, if you don’t already have one we can help you with that! We have partnered with a third-party Telehealth company, providing online consultations with US licensed doctors, for a $5 fee.
We make it easy! All we require is contact information for your pharmacy or doctor’s office, and we will take care of transferring your prescription over for you. If you do not have an existing prescription, you can talk to one of our online physicians now and they can submit a prescription directly into our system for you.
UPRx.com offers both generic and brand-name prescription medications. The generic versions are generally significantly cheaper than the brand name version of a drug. However, please consult with your doctor to find out which variation of any specific drug is best for you.
With the exception of our products’ pricing and our third- party Telehealth service, the use of our website and services are completely cost-free.
After your order is placed, UPRx will retrieve your valid prescription from your doctor or pharmacy. Once the prescription is confirmed as authorized and corresponding to your order, our participating pharmacy begins to process your order. Depending on the specific drug and location, we can ship out some products as soon as same day, and we commit to shipping out all products within 48 hours of verifying your prescription.
Our site does not support insurance at this time, as we are focusing our efforts on getting you the best cash price. You may not know this, but there are some instances where it’s significantly cheaper to pay cash for a medication rather than to order it through your insurer’s pharmacy benefits program. Here at UPRx, we cut out the middleman and do the negotiating for you- providing you with the same drugs, for less pay.
Nothing should stand in the way of you getting the drugs you need to feel and perform your best. UPRx orders arrive in discreet packaging, because your health is personal, and should remain that way.
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When UPRx obtains your medical information while acting on your behalf, we will maintain the privacy and security of that information in accordance with the standards of the HIPAA security regulations. Additionally, UPRx is fully registered and operates in multiple locations across the United States of America. Our partner pharmacy, Apogee BioPharm, is licensed and operated in all 50 states and territories. At UPRx we are committed to only purchasing locally sourced items and products.

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