Vilazodone Hydrochloride (2 brand names, 1 dosage form, 1 route)
Available dosage forms: TABLET.
Routes of administration: ORAL.
Brand Names
- VIIBRYD
- VILAZODONE HYDROCHLORIDE
Boxed Warning
Antidepressants increased the risk of suicidal thoughts and behavi ors in pediatric and young adult patients in short-term studies. Closely monitor all antidepressant-treated patients for clinical worsening and for emergence of suicidal thoughts and behaviors [see Warnings and Precautions ( 5.1 )] . V IIBRYD is not approved for use in pediatric patients [see Use in Specific Populations ( 8.4 )] .
Indications and Usage
VIIBRYD® is indicated for the treatment of major depressive disorder (MDD) in adults [see Clinical Studies ( 14 )].
Contraindications
VIIBRYD is contraindicated in: Patients taking, or within 14 days of stopping, monoamine oxidase inhibitors (MAOIs), including MAOIs such as linezolid or intravenous methylene blue, because of an increased risk of serotonin syndrome [see Warnings and Precautions ( 5.2 ) , Drug Interactions ( 7 ) ].
Adverse Reactions
The following adverse reactions are discussed in greater detail in other sections of the labeling: Suicidal Thoughts and Behaviors in Adolescents and Young Adults [see Warnings and Precautions ( 5.1 )]. Serotonin Syndrome [see Warnings and Precautions ( 5.2 )]. Increased Risk of Bleeding [see Warnings and Precautions ( 5.3 )]. Activation of Mania or Hypomania [see Warnings and Precautions ( 5.4 )]. Discontinuation Syndrome [see Warnings and Precautions ( 5.5 )]. Seizures [see Warnings and Precautions ( 5.6 )]. Angle-Closure Glaucoma [see Warnings and Precautions ( 5.7 )]. Hyponatremia [see Warnings and Precautions ( 5.8 )]. Sexual Dysfunction [see Warnings and Precautions ( 5.9 )].
Mechanism of Action
The mechanism of action of vilazodone in the treatment of major depressive disorder is not fully understood, but is thought to be related to its enhancement of serotonergic activity in the CNS through selective inhibition of serotonin reuptake. Vilazodone is also a partial agonist at serotonergic 5-HT1A receptors; however, the net result of this action on serotonergic transmission and its role in vilazodone’s antidepressant effect are unknown.
Overdosage
There is limited clinical trial experience regarding human overdose with VIIBRYD. The adverse reactions associated with overdose of VIIBRYD at doses of 200-280 mg (5 to 7 times the recommended dosage) as observed in clinical trials included serotonin syndrome, lethargy, restlessness, hallucinations, and disorientation. For current information on the management of poisoning or overdose, contact a poison control center at 1-800-222-1222. No specific antidotes for vilazodone are known. Removal of vilazodone by dialysis has not been studied; however, the high volume of distribution of vilazodone suggests that dialysis will not be effective in reducing vilazodone plasma concentrations.