Trintellix vs. Viibryd

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

Key Takeaways

  • Both Trintellix and Viibryd treat major depressive disorder in adults and carry the same boxed warning about suicidal thoughts in younger patients.

  • Trintellix has a simpler once-daily routine with no food requirement, while Viibryd must be taken with food to absorb properly.

  • Viibryd's most common side effect is diarrhea, while Trintellix's is dose-related nausea, so the day-to-day tolerability profile differs.

Trintellix vs. Viibryd Drug Summary

Trintellix

Trintellix (vortioxetine) is a serotonin modulator and stimulator (SMS) used to treat major depressive disorder in adults. It's taken as a single oral tablet once a day, usually starting at 10 mg and increasing to 20 mg as tolerated.

Viibryd

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

Trintellix vs. Viibryd Side Effects

Trintellix

Most common
nausea (20% to 32%)
vomiting (3% to 6%)
constipation (3% to 6%)
dizziness (3% to 5%)

Viibryd

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

Trintellix vs. Viibryd Dosage

Trintellix

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 10 mg once daily At the start
Maximum dose 5 mg once daily If needed
Dose changes 2 increases As tolerated

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

Trintellix vs. Viibryd Indications

Trintellix

Trintellix is FDA-approved to treat major depressive disorder in adults. It is not approved for use in children or adolescents. As a serotonin modulator, it works differently than standard SSRIs and SNRIs.

  • Treats major depressive disorder (MDD) in adults

  • Not approved for children or adolescents

  • Taken once daily, with or without food

  • Distinct SMS mechanism, unlike standard SSRIs/SNRIs

Viibryd

Viibryd is FDA-approved to treat major depressive disorder in adults. It is not approved for pediatric depression. As a serotonin partial agonist and reuptake inhibitor, it combines two mechanisms not found in standard SSRIs.

  • Treats major depressive disorder (MDD) in adults

  • Not approved for pediatric MDD

  • Must be taken once daily with food

  • Combines reuptake inhibition with 5-HT1A agonism

Trintellix vs. Viibryd Pros and Cons

Trintellix

Trintellix's single titration step and lack of food requirement make it a straightforward option for many patients starting an antidepressant. Its distinct mechanism is linked to lower rates of sexual side effects and weight gain than many SSRIs, though it currently has no generic version.

Pros

  • Simpler titration, typically only one dose increase needed

  • No food requirement, can be taken any time of day

  • Lower risk of diarrhea than Viibryd's most common side effect

Cons

  • No generic version currently available, brand-only pricing

  • Nausea risk increases with dose and can be significant at 20 mg

  • Newer mechanism means fewer long-term outcome studies than older classes

Viibryd

Viibryd's structured two-week titration schedule gets patients to a stable maintenance dose quickly, but it must be taken with food every day for the medication to absorb properly. Diarrhea is notably more common with Viibryd than with Trintellix, which can affect tolerability early in treatment.

Pros

  • Defined two-week schedule reaches full maintenance dose predictably

  • FDA has approved a generic version, though not yet widely marketed

  • Long-established SPARI mechanism with over a decade of clinical use

Cons

  • Must be taken with food daily or absorption drops significantly

  • Higher rate of diarrhea than Trintellix's typical GI profile

  • More complex titration with two separate dose increases

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