Venlafaxine and Vilazodone interaction
Venlafaxine and Vilazodone: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Venlafaxine (Venlafaxine Hydrochloride) label · effective 2025-01-31
Anyone considering the use of Venlafaxine Extended Release Tablets or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need.
If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases.
If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, inform patients of the increased risk for serotonin syndrome and monitor for symptoms.
Bleeding events related to SSRIs and SNRIs use have ranged from ecchymoses, hematomas, epistaxis, and petechiae to life-threatening hemorrhages.
If serotonin syndrome occurs, consider discontinuation of Venlafaxine Extended Release Tablets and/or concomitant serotonergic drugs [see Warning and Precautions ( 5.2 )].
From the Vilazodone (VIIBRYD) label · effective 2023-10-01
Serotonin Syndrome: Increased risk when co-administered with other serotonergic agents, but also when taken alone.
Serotonin Syndrome Serotonin and norepinephrine reuptake inhibitors (SNRIs) and selective serotonin reuptake inhibitor (SSRIs), including VIIBRYD, can precipitate serotonin syndrome, a potentially life-threatening condition.
If concomitant use of VIIBRYD with other serotonergic drugs is clinically warranted, inform patients of the increased risk for serotonin syndrome and monitor for symptoms.
Drugs Having Clinically Important Interactions With VIIBRYD Table 4: Clinically Important Drug Interactions with VIIBRYD Concomitant Drug Name or Drug Class Clinical Rationale Clinical Recommendation Monoamine Oxidase Inhibitors (MAOIs) The concomitant use of MAOIs and serotonergic drugs including VIIBRYD increases the risk of serotonin syndrome.
If serotonin syndrome occurs, consider discontinuation of VIIBRYD and/or concomitant serotonergic drugs [see Warnings and Precautions ( 5.2 )].
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.