Paxil (Paroxetine)
Generic: Paroxetine
A potent SSRI effective for depression, anxiety disorders, and PTSD
Important: This information is for educational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider before starting, stopping, or changing any medication.
Overview
Paxil (paroxetine) is a selective serotonin reuptake inhibitor (SSRI) with FDA approval for depression, panic disorder, social anxiety disorder, generalized anxiety disorder, PTSD, and OCD. It's one of the most potent SSRIs and has particularly strong anti-anxiety effects. At Next Step Psychiatry, we consider both the benefits and the notable discontinuation issues when prescribing Paxil.
How Paxil Works
Paroxetine potently blocks serotonin reuptake, increasing serotonin availability in the brain. It also has some anticholinergic and antihistamine effects, which may contribute to its calming properties but also some side effects. It's considered the most potent SSRI in terms of serotonin transporter binding.
What Is Paxil Used For?
Conditions Treated at Next Step Psychiatry
Dosage Information
Starting Dose
20 mg once daily (10 mg for panic disorder)
Typical Dose
20-40 mg daily
Maximum Dose
50 mg for depression, 60 mg for OCD and panic
Important Notes:
- •Usually taken in the morning with or without food
- •Paxil CR (controlled-release) should not be crushed or chewed
- •Has sedating qualities - some patients take at bedtime
- •OCD may require higher doses
- •Must be tapered very slowly when stopping
Side Effects
Common Side Effects
These may occur when starting the medication and often improve over time:
Serious Side Effects (Seek Medical Attention)
Important Warnings
- !BLACK BOX: Suicidal thoughts in children, adolescents, and young adults
- !Avoid in pregnancy - associated with birth defects (especially cardiac)
- !DIFFICULT TO DISCONTINUE - severe withdrawal symptoms common
- !Do not use with MAO inhibitors or thioridazine
- !Higher rates of weight gain and sexual side effects
- !Strong CYP2D6 inhibitor - many drug interactions
When to Seek Immediate Medical Help
Contact your doctor immediately or go to the emergency room if you experience:
- →Suicidal thoughts or behaviors
- →Signs of serotonin syndrome
- →Severe discontinuation symptoms
- →Unusual bleeding or bruising
- →Manic symptoms
- →Severe allergic reaction
- →Eye pain or vision changes
Drug Interactions
Tell your doctor about all medications, supplements, and herbal products you take. Important interactions include:
Frequently Asked Questions
Why is Paxil difficult to stop?
Paxil has a short half-life and potent serotonin effects, leading to significant discontinuation symptoms (dizziness, nausea, "brain zaps," anxiety). It must be tapered very slowly, sometimes over months, to minimize withdrawal.
Is Paxil safe during pregnancy?
Paxil has been associated with an increased risk of heart defects when taken during the first trimester. If you become pregnant while on Paxil, do not stop abruptly—consult your provider about the safest approach.
Does Paxil cause more weight gain than other SSRIs?
Studies suggest Paxil may cause more weight gain than some other SSRIs. If weight gain is a concern, discuss alternatives with your provider. Lifestyle modifications can also help.
Crisis Support
If you're experiencing a mental health crisis or thoughts of suicide, call 988 (Suicide & Crisis Lifeline) or go to your nearest emergency room. Help is available 24/7.
Other Medications We Prescribe
Questions About Paxil?
Our psychiatrists provide expert medication management and can help determine if Paxil is right for you.
4145 Lawrenceville Hwy NW, Suite 100, Lilburn, GA 30047