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    ๐Ÿงช This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    4B-MAR

    Aliases: 4'-br-4-mar, 4-bromo aminorex

    Categories

    Summary TheDrug.Wiki

    First definitively identified in Austria in January 2022 and sold online as racemic trans-diastereomer (approximately 90% assay purity). No peer-reviewed pharmacodynamic studies yet exist; structure-activity relationships and subjective reports suggest potency slightly lower than 4-methylaminorex but still active at sub-25 mg doses. User reports from Bluelight and research forums indicate threshold effects at 2-4 mg insufflated and functional amphetamine-like stimulation around 15-25 mg with 12-18 hour wakefulness but modest euphoria. Analytical characterization confirms bromine isotopic LC-HRMS signature (m/z 255.0133 [M+H]+) and chiral separation reveals racemic trans-diastereomer form. Purity differences between batches (85-98%) warn of potential inactive filler or active by-products.

    Dose Information TheDrug.Wiki

    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki

    ROA Onset Comeup Peak Offset After Effects
    Oral / Sublingual 20-60 min 30-90 min 2-4 hrs 4-6 hrs 6-24 hrs
    Insufflated 10-30 min 20-45 min 2-4 hrs 4-6 hrs 6-24 hrs
    Vaporized / Smoked 1-5 min 5-15 min 2-4 hrs 3-5 hrs 6-24 hrs

    Tolerance

    Build-up develops over days to weeks of regular use
    Reset 3โ€“7 days for acute; 1โ€“3 weeks for full reset

    Effects TheDrug.Wiki

    Positive
    • Stimulation
    • Increased energy
    Negative
    • Increased perspiration
    • Teeth grinding
    • Pupil dilation
    • Increased heart rate
    • Vasoconstriction
    • Insomnia
    • Increased blood pressure
    • Bruxism
    Positive
    • Focus enhancement
    • Motivation enhancement
    • Analysis enhancement
    • Wakefulness
    • Euphoria
    Negative
    • Anxiety
    • Compulsive redosing
    Neutral
    • Time distortion
    • Thought acceleration
    • Talkativeness
    Positive
    • Increased libido
    • Increased music appreciation
    • Visual enhancement
    • Tactile enhancement
    Negative
    • Appetite suppression
    • Light sensitivity
    • Dehydration
    • Disinhibition
    • Double vision
    Neutral
    • Dulled perception

    Combinations TripSit

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