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
Viibryd
Effexor vs. Viibryd Dosage
Effexor
Viibryd
| 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 |
| 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
| 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
| 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
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