Effexor vs. Viibryd

See how Effexor and Viibryd compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Effexor (venlafaxine) is an SNRI approved for depression, generalized anxiety, social anxiety, and panic disorder, while Viibryd (vilazodone) is approved only for major depressive disorder in adults.

  • Effexor's most common side effect is nausea, affecting up to 37% of patients, while Viibryd's most common side effect is diarrhea, affecting up to 28%.

  • Effexor is widely available as a low-cost generic, while Viibryd has no generic option and typically costs more each month.

Effexor vs. Viibryd Drug Summary

Effexor

Effexor (venlafaxine) is a serotonin-norepinephrine reuptake inhibitor (SNRI) approved for major depressive disorder, generalized anxiety disorder, social anxiety disorder, and panic disorder. It is taken once daily as an extended-release capsule, with doses gradually increased from 37.5 mg up to as much as 225 mg.

Viibryd

Viibryd (vilazodone) is a serotonin partial agonist and reuptake inhibitor (SPARI) approved for major depressive disorder in adults. It is taken once daily as a tablet with food, with doses titrated from 10 mg up to a 40 mg maintenance dose over two weeks.

Effexor vs. Viibryd Side Effects

Effexor

Most common
nausea (up to 37%)
somnolence (up to 23%)
dry mouth (up to 22%)
dizziness (up to 19%)

Viibryd

Most common
diarrhea (up to 28%)
nausea (up to 23%)
insomnia (6% to 7%)
vomiting (up to 5%)

Effexor vs. Viibryd Dosage

Effexor

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 37.5 mg once daily Days 1-7
Maximum dose 75 mg once daily Day 8 onward
Dose changes 1 increase Every 7 days

Viibryd

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 10 mg once daily Days 1-7
Maximum dose 40 mg once daily Day 15 onward
Dose changes 2 increases Every 7 days

Effexor vs. Viibryd Indications

Effexor

Effexor is FDA-approved to treat major depressive disorder along with three anxiety-related conditions, giving it a broader label than many other antidepressants. Doctors also prescribe it off-label for chronic nerve pain and menopausal hot flashes.

  • Major depressive disorder (MDD)

  • Generalized anxiety disorder (GAD)

  • Social anxiety disorder (SAD)

Viibryd

Viibryd is FDA-approved only for major depressive disorder in adults, with no additional approved uses for anxiety disorders. Its distinct mechanism, combining serotonin reuptake inhibition with partial receptor activation, offers an alternative when standard antidepressants aren't effective.

  • Major depressive disorder (MDD) in adults

  • Not approved for pediatric use

  • No FDA-approved anxiety indications

Effexor vs. Viibryd Pros and Cons

Effexor

Effexor has decades of clinical use and covers four FDA-approved indications spanning depression and anxiety disorders. Generic venlafaxine is widely available, making it typically much less expensive than Viibryd, though brand-name Effexor XR carries a similar price to Viibryd.

Pros

  • FDA-approved for MDD, GAD, social anxiety, and panic disorder

  • Generic venlafaxine widely available, often $10 to $45/month

  • Long track record since 1997 with extensive safety data

Cons

  • Can cause sustained blood pressure increases at higher doses

  • Requires gradual tapering to avoid discontinuation symptoms

  • Higher rates of sweating and dry mouth than Viibryd

Viibryd

Viibryd offers a distinct receptor mechanism that may work when other antidepressants have failed, but it carries a single FDA-approved indication for adult depression. It has no widely available generic, so most patients pay significantly more out of pocket than for generic venlafaxine.

Pros

  • Simple two-week titration to full maintenance dose

  • Distinct receptor mechanism may help if SSRIs/SNRIs haven't worked

  • Lower rates of blood pressure elevation and sweating

Cons

  • No generic available, typically $380 to $650/month

  • Must be taken with food or absorption drops significantly

  • Only approved for adult MDD, not anxiety disorders

Common Symptoms and Related Diseases You Can Explore

Explore a range of common symptoms the Doctronic Symptom Checker can help you understand.