Viibryd vs. Remeron
See how Viibryd and Remeron compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Viibryd is a serotonin partial agonist and reuptake inhibitor taken with food, while Remeron is a sedating tetracyclic antidepressant usually taken at bedtime.
Viibryd's most common side effects are gastrointestinal, while Remeron more often causes drowsiness, increased appetite, and weight gain.
Both drugs carry a boxed warning for increased suicidal thoughts in children, adolescents, and young adults and are not approved for pediatric depression.
Viibryd vs. Remeron Drug Summary
Viibryd
Viibryd (vilazodone) is a serotonin partial agonist and reuptake inhibitor (SPARI) approved for major depressive disorder in adults. It is taken once daily with food, since food significantly boosts absorption. Its mechanism combines serotonin reuptake blockade with partial 5-HT1A receptor activation, setting it apart from standard SSRIs.
Remeron
Remeron (mirtazapine) is a tetracyclic antidepressant approved for major depressive disorder in adults. It is typically taken once daily at bedtime because of its strong sedating effect, especially at lower doses. Beyond depression, it is also used off-label for insomnia, anxiety, and appetite stimulation.
Viibryd vs. Remeron Side Effects
Viibryd
Remeron
Viibryd vs. Remeron Dosage
Viibryd
Remeron
| 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 | 15 mg once daily | At the start |
| Maximum dose | 45 mg once daily | If needed |
| Dose changes | 2 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 |
Remeron
| STAGE | DOSE | WHEN |
| Starting dose | 15 mg once daily | At the start |
| Maximum dose | 45 mg once daily | If needed |
| Dose changes | 2 increases | As tolerated |
Viibryd vs. Remeron Indications
Viibryd
Viibryd is FDA-approved specifically for major depressive disorder in adults. It has not been established as safe or effective in children or adolescents. Doctors sometimes consider it when a patient hasn't responded well to standard SSRIs, given its added 5-HT1A partial agonism.
Treats major depressive disorder in adults
Not approved for pediatric depression
Sometimes considered after SSRI non-response
Requires food for proper absorption
Remeron
Remeron is FDA-approved for major depressive disorder in adults and is not established as safe or effective in children. Its sedating and appetite-stimulating properties make it a common off-label choice for insomnia, anxiety, and low appetite. It is generally avoided in bipolar depression due to safety concerns.
Treats major depressive disorder in adults
Not approved for pediatric depression
Off-label use for insomnia and anxiety
Off-label use for appetite/weight stimulation
Viibryd vs. Remeron Pros and Cons
Viibryd
Viibryd offers a distinct mechanism that may cause less weight gain than many SSRIs, though it is not sedating and requires a specific dosing routine with food. As a brand-name drug without a widely available generic, it tends to cost more out of pocket than mirtazapine.
Pros
Less commonly linked to weight gain
Non-sedating, can be taken in the morning
Distinct 5-HT1A mechanism may help SSRI non-responders
Cons
Must be taken with food to absorb properly
No widely available generic, higher cost
GI side effects like diarrhea and nausea are common
Costs roughly $380 to $650 per month without insurance
Remeron
Remeron's sedating effect and appetite stimulation make it useful for patients with insomnia or poor appetite alongside depression, but the same effects often cause weight gain and daytime drowsiness. It also carries a rare risk of severe neutropenia that requires watching for symptoms like fever or sore throat.
Pros
Generic version costs roughly $10 to $40 per month, much less than Viibryd
Sedating effect can help with co-occurring insomnia
May stimulate appetite in patients with poor intake
Cons
Causes significant weight gain and appetite increase
Strong sedation can impair daytime alertness
Rare risk of severe neutropenia requiring blood monitoring
Not used for bipolar depression
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