SNRI (serotonin-norepinephrine reuptake inhibitor)

Fetzima (levomilnacipran) Withdrawal

Fetzima (levomilnacipran) has a discontinuation pattern similar to other short-half-life SNRIs. Less commonly prescribed than Cymbalta or Effexor, so patient communities discussing withdrawal are smaller, but the same physiology applies.

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

Half-life

~12 hours.

Withdrawal timeline

Onset— 1-2 days after dose reduction

Symptoms emerge within a day or two.

Peak— Days 2-5

Symptom intensity peaks in the first 5 days.

Resolution— 2-3 weeks

Most patients are through the acute phase within 2-3 weeks.

Common symptoms

  • Dizziness
  • Nausea
  • Headache
  • Flu-like fatigue
  • Anxiety rebound
  • Irritability
  • Sleep disturbance

Less common

  • Brain zaps
  • Sweating
  • Tremor

Tapering guidance

  • A typical taper reduces by 20 mg every 1-2 weeks (e.g., 80 mg to 40 mg to 20 mg to off).
  • Coordinate the taper with the prescribing physician.

Where ketamine therapy fits

Fetzima is compatible with at-home ketamine therapy. The two work through different mechanisms with no required washout. Continue Fetzima 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 Fetzima withdrawal last?

Most patients experience peak symptoms in the first 5 days and full resolution within 2-3 weeks.

Is Fetzima 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.