Effexor (Venlafaxine)
Effexor is an SNRI used to treat depression, generalized anxiety disorder, social anxiety, & panic disorder. It is known for its dual action on norepinephrine & serotonin reuptake, which may offer superior efficacy in severe depression compared to SSRIs.
Evidence last reviewed: 05 Apr 2026
Not a routine supplement — not recommended for self-directed use.
Information here is educational only, not a recommendation to use. See our Safety page.
Evidence is from research or clinical settings — does not imply safety outside supervised contexts.
The evidence supports Effexor's efficacy in reducing relapse rates in major depression and treating panic disorder, with high-quality studies backing these claims. However, there are moderate concerns regarding withdrawal symptoms and adverse events that should be considered in treatment planning.
Depression relapse rateAdults with major depressive disorder · Systematic reviewHigh
Venlafaxine was effective in reducing the 6-month relapse rate in patients with major depressive disorder.
Optimal dose for major depressionAdults with major depression · Systematic reviewModerate
The study aimed to determine the optimal dose of venlafaxine for treating major depression.
Efficacy in panic disorderAdults with panic disorder · Meta-analysisHigh
Venlafaxine is effective in treating panic disorder, achieving a balance between efficacy & tolerability.
Adverse events riskAdults with major depressive disorder · Systematic reviewModerate
Venlafaxine is associated with a risk of adverse events, which should be considered in treatment planning.
Withdrawal symptomsAdults discontinuing venlafaxine · Systematic reviewModerate
Withdrawal symptoms are common after discontinuation of venlafaxine, with symptoms appearing within a few days & lasting a few weeks.