Viibryd vs. Luvox
See how Viibryd and Luvox compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Viibryd is a SPARI approved only for adult depression, while Luvox is an SSRI approved for OCD in adults and children, though it's often used off-label for depression.
Luvox typically costs far less than Viibryd, but Viibryd's distinct mechanism carries fewer drug interaction risks than Luvox's strong CYP1A2 inhibition.
Both drugs carry a boxed warning for suicidal thoughts in young people and can cause serotonin syndrome, so either one requires close monitoring, especially early in treatment.
Viibryd vs. Luvox Drug Summary
Viibryd
Viibryd (vilazodone) is a serotonin partial agonist and reuptake inhibitor (SPARI), a newer antidepressant class distinct from standard SSRIs. It is FDA-approved to treat major depressive disorder in adults and is taken once daily with food, starting at a low dose and increased over two weeks.
Luvox
Luvox (fluvoxamine) is an SSRI FDA-approved to treat obsessive-compulsive disorder in adults and children age 8 and up. It is taken once or twice daily, with doses increased gradually and split into two doses at higher amounts, and is also prescribed off-label for depression and anxiety disorders.
Viibryd vs. Luvox Side Effects
Viibryd
Luvox
Viibryd vs. Luvox Dosage
Viibryd
Luvox
| 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 |
| STAGE | DOSE | WHEN |
| Starting dose | 25 mg once daily | At the start |
| Maximum dose | 300 mg/day | If needed |
| Dose changes | 4 increases | As tolerated |
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 |
Luvox
| STAGE | DOSE | WHEN |
| Starting dose | 25 mg once daily | At the start |
| Maximum dose | 300 mg/day | If needed |
| Dose changes | 4 increases | As tolerated |
Viibryd vs. Luvox Indications
Viibryd
Viibryd is FDA-approved specifically for major depressive disorder in adults. Its distinct SPARI mechanism, combining serotonin reuptake inhibition with partial 5-HT1A receptor agonism, offers an alternative for patients who have not responded well to standard SSRIs.
Major depressive disorder in adults
Not approved for pediatric depression
Taken once daily with food
Distinct SPARI mechanism vs standard SSRIs
Luvox
Luvox is FDA-approved for obsessive-compulsive disorder in adults and children ages 8 to 17. It is also commonly used off-label for major depressive disorder, social anxiety disorder, and panic disorder, though these uses are not FDA-approved.
Obsessive-compulsive disorder in adults
Pediatric OCD, ages 8 to 17
Off-label: major depressive disorder
Off-label: social anxiety, panic disorder
Viibryd vs. Luvox Pros and Cons
Viibryd
Viibryd's SPARI mechanism sets it apart from typical SSRIs, though it comes at a higher cost and without a widely available generic. It carries the same boxed warning and serotonergic risks common to antidepressants, and coverage can be inconsistent given its brand-only status.
Pros
Unique dual-action mechanism distinct from SSRIs
Minimal CYP1A2 drug interaction risk
Reaches target dose in just two weeks
FDA-approved specifically for depression
Cons
Must be taken with food for absorption
No generic version widely available
Roughly $380 to $650 per month before insurance
Not approved for OCD or anxiety disorders
Luvox
Luvox has decades of use for OCD and is available only as an inexpensive generic, but it is not FDA-approved for depression despite common off-label use. Its strong CYP1A2 inhibition creates more drug interaction risks, and its side effect rates for nausea and insomnia run higher than Viibryd's.
Pros
FDA-approved for OCD in adults and children
Decades of established clinical use since 1994
Roughly $15 to $170 per month before insurance
Flexible dosing up to 300 mg for severe OCD
Cons
Significant CYP1A2 drug interactions
Not FDA-approved for depression
Higher rates of nausea and insomnia
Higher doses require split dosing
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