SSRI / 5-HT1A partial agonist

Viibryd (vilazodone) Withdrawal

Viibryd has a moderate discontinuation profile similar to other SSRIs with comparable half-lives. The 5-HT1A partial agonist activity does not appear to substantially alter the withdrawal pattern compared to pure SSRIs.

By Dr. Ben Soffer, DO — board-certified physician, at-home ketamine therapy in Florida and New Jersey.

Half-life

~25 hours.

Withdrawal timeline

Onset— 1-3 days after dose reduction

Symptoms emerge gradually as serum levels fall.

Peak— Week 1-2

Symptom intensity is highest in the first 7-14 days.

Resolution— 2-4 weeks

Most patients are through the acute phase within a month.

Common symptoms

  • Dizziness
  • Nausea
  • Headache
  • Irritability
  • Sleep disturbance
  • Anxiety rebound

Less common

  • Brief brain zaps
  • Sweating
  • Vivid dreams

Tapering guidance

  • A typical taper reduces by 10 mg every 1-2 weeks (e.g., 40 mg to 20 mg to 10 mg to off).
  • Take Viibryd with food during the taper to maintain absorption (the medication has reduced bioavailability when taken on an empty stomach).
  • Coordinate any taper with the prescribing physician.

Where ketamine therapy fits

Viibryd is compatible with at-home ketamine therapy. The two work through different mechanisms with no required washout. Continue Viibryd as prescribed during ketamine treatment unless the prescribing physician specifically advises otherwise.

Check ketamine therapy eligibilityMedication safety with ketamine

Frequently asked questions

How long does Viibryd withdrawal last?

Most patients experience peak symptoms in the first 1-2 weeks after their last dose and full resolution within 3-4 weeks.

Is Viibryd compatible with ketamine therapy?

Yes. The two work through different mechanisms with no required washout.

Important: This page is informational and does not constitute medical advice or a recommendation to start, stop, or change any medication. Tapering psychiatric medications should always be coordinated with the prescribing physician. Compounded ketamine for anxiety, depression, PTSD, and chronic pain is not FDA approved.

Browse all medication withdrawal guides.