Canada Drug Pharmacy > Pristiq ER (Desvenlafaxine)

Buy Pristiq ER (Desvenlafaxine)

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Pristiq ER is an extended release tablet used in treatment for mood disorders, primarily depression. Pristiq, also know as by it's generic name Desvenlafaxine is a serotonin-norepinephrine reuptake inhibitor (SNRI) and restore the chemical balance in the brain to help to treat symptoms of depression.  

Pristiq is taken once a day with or without good. Dosage sizes are reliant on your diagnosis and could change based on your medical condition, and how you respond to the treatment. Do not crush or break apart the tablets unless there is a score line, and you have also been instructed to do so by your pharmacist.

Depending on the medical case you could be started on a low dose of Pristiq and increase in dose size over time. Your doctor will help guide you through this process as your condition is observed by your doctor over time. 

It can take time before the full effect is felt from taking Pristiq. This medication should used regularly to get the maximum benefit, and you should not stop taking Pristiq even if you feel better.

Speak to your doctor first about prior medical conditions, know allergies, and any current medication you are taking before entering a treatment with Pristiq. Go over any history of mental health or mood disorders to know if Pristiq is the right fit for your treatment.

Pristiq can cause dizziness and a feeling of being drowsy. Avoid driving or operating heavy machinery until you know the effects of Pristiq. Avoid alcohol when taking Pristiq and speak with your doctor about it's acceptable limits.

In cases where the patient is switching antidepressant medication, your doctor will instruct how to lower the dose of your first medication to switch to Pristiq. This is done in order to prevent side effects and to allow the new medication to take effect slowly.

Some side effects can include:




dry mouth


loss of appetite

weight loss

blurred vision


trouble sleeping or excessive sweating may occur

raised blood pressure may also occur


More sever side effects can include:

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)



If serious side effects occur, speak to your doctor right away for medical treatment. If some less serious side effects become severe, speak with your doctor or pharmacist for ways to manage the side effects.

Q: How should I store Pristiq?

A: This medication should be stored at room temperature, and should be kept away from children and pets. Avoid disposing of this medication through wastewater and contact your local pharmacist for further disposal instructions.


Q: Can I share my medication with friends who is also using the same medication as me?

A: No, you should never share you medication with anyone else for health reasons. Your dose strength may specific to your medical condition and may harm someone else. 


Q: What does ER mean in Pristiq?

A: ER stands for extended release tablets. If you see an empty capsule in your stool. Do not be alarmed, this is an indication that the medication has been absorbed into your system.


Q: Can I take Pristiq while pregnant or breatfeeding?

A: There can cases where Pristiq may effect the unborn baby during pregnancy, and Pristiq can enter the breast milk and be passed into the nursed infant. It is important to speak with your doctor about taking Pristiq in either of these cases to understand the risk involved.

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