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    Venlafaxine Limited data
    Limited data
    Sparse data. Doses and effects may be unreliable or untested.
    • 1 source
    • no dose data
    • PubChem toxicity data

    Aliases: Efexor, Effexor, Effexor xr

    Summary Erowid

    Venlafaxine is a serotonin and norepinephrine reuptake inhibitor which is used in the treatment of depression and general anxiety disorder. It is also used off-label to treat a variety of other disorders.

    Tolerance

    Build-up varies by mechanism; therapeutic tolerance may develop over weeks of regular use
    Reset typically days to weeks after discontinuation

    Tolerance Decay

    Full tolerance 3d Half tolerance 8d Baseline ~14d

    Effects Erowid

    Aggregated from 155 Erowid experience reports

    Positive Effects 8

    Stimulation 36.8% 70%
    Euphoria 17.4% 70%
    Empathy 16.1% 70%
    Focus Enhancement 16.1% 70%
    Music Enhancement 12.9% 70%
    Color Enhancement 10.3% 70%
    Tactile Enhancement 7.7% 70%
    Body High 3.9% 70%

    Adverse Effects 14

    Anxiety 55.5% 70%
    Confusion 27.1% 70%
    Nausea 22.6% 70%
    Increased Heart Rate 9.7% 70%
    Pupil Dilation 9.0% 70%
    Sweating 8.4% 70%
    Seizure 8.4% 70%
    Muscle Tension 6.5% 70%
    Appetite Suppression 5.2% 70%
    Jaw Clenching 5.2% 70%
    Psychosis 5.2% 70%
    Memory Suppression 4.5% 70%
    Headache 3.2% 70%
    Motor Impairment 2.6% 70%

    Community Trip Reports

    Anecdotal first-person accounts from Reddit, Erowid, and Bluelight. Click a source to expand. Reports are harm-reduction context, not medical guidance.

    Erowid 8 reports 1 positive 3 neutral 4 cautionary visit
    Saved My Life, But Difficult to Quit positive exp #40457

    I began taking Effexor for depression in 1999 and took it until 2003. After several years of trying to treat my illness with different drugs prior to 1999, it turned out Effexor was the one that really worked. For a long time it seemed as though this was the perfect prescription for me.

    Happy Mondays · Venlafaxine (Effexor)
    It Didn't Get Me High, It Changed Me neutral exp #82048

    My decade of drug use ended me up financially broken and in drug rehab for Heroin/OxyContin addiction. As evil as Heroin/Oxy may be, this substance did far more to me in retrospect especially since, at the time, it was far more subtle.

    Don · 225 mg oral
    How is This Chemical Legal? neutral exp #24166

    Let me start with a little personal history, explaining why I was given this medication. I'm for the most part a normal guy, and have good days, bad days, and days that are somewhere in between.

    BurnsXL · oral
    Better Off Smoking Crack neutral exp #29660

    I thought I was alone in this, but after reading the effexor experience vaults, I realized that I am not. ... Halfway through my senior high-school year I came down with a paralyzing depression. I was at a boarding school, and one day I just couldn't get out of bed...

    Xray · Venlafaxine (Effexor) · 300 mg oral
    Looking Back cautionary exp #38973

    This is a retrospective of my experiences, but first I'd like to relate one from my ex-girlfriend. My ex-girlfriend developed terrible insomnia after a 3 month period of using methamphetamines fairly heavily. This insomnia quickly developed resistance to ANY treatment, ambien, restoril, anything.

    21stCenturyCowboy · Venlafaxine (Effexor XR)
    Electric Shock Brain Daze cautionary exp #67314

    I am currently recovering form one of the worst few days of my life, and am still in complete shock about what has happened to me. Its Sunday afternoon now but I have to keep reminding myself of that fact cause to be honest it could be any day or anytime, I am completely disorientated and have to keep telling myself re...

    Stupid Boy · 37.5 mg oral / 37.5 mg oral
    Some Good, Some Bad, Some Ugly cautionary exp #38931

    Since childhood I have experience mood problems, ranging from general unhappiness associated with self detachment all the way to extreme depression and hopelessness. Feelings of being isolated and incapable of experiencing a real emotion feeling fake. This peaked in my early twenties when I attempted suicide.

    an artist · Venlafaxine (Effexor) · 112.5 mg oral
    Separation From Self cautionary exp #35190

    I consider myself to be a relatively sane and rational person. At least now. However, after faring a rather difficult time in my life I started to notice a few changes in my overall mental state. I was experiencing slight to mild paranoia, along with anxiety of a similar degree.

    Anonymous · Venlafaxine (Effexor XR) · oral
    Bluelight 1 thread 1 neutral visit
    St Johns Wort 2g Unexp Effexor Xr 150mg Very Exp Quite Intense neutral

    A couple of points before I begin: 1. As far as I know taking this combination of substances is potentially dangerous and one risks serotonin syndrome. I guess this is why on the St. John's Wort bottle it warns on the back not to take with prescription anti-depressants. 2.

    scraped 2026-03-14

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