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    ⚠ Opioids carry significant risk of respiratory depression, physical dependence, and fatal overdose. Never combine with other depressants.

    Heroin

    Aliases: H, Boy, Junk, Dope, Gear, diamorphine

    Categories

    Depressant Opioid
    Heroin structure

    Summary TheDrug.Wiki Erowid TripSit PsychonautWiki

    Heroin is highly illegal in most countries and carries extreme overdose risk due to variable purity, fentanyl contamination, and rapid tolerance development. Street heroin ranges from 5-95% purity making accurate dosing nearly impossible. After any period of abstinence, tolerance drops dramatically and previous doses become potentially fatal. Always use with naloxone available, never use alone, test substances when possible, and employ proper harm reduction practices. Medical diamorphine is used only in certain countries for severe pain management.

    Dose Information TheDrug.Wiki TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Intravenous - 5-8mg 8-15mg 15mg+
    Insufflated 7.5-20mg 20-35mg 35-50mg 50mg+
    Smoked 5-15mg 15-25mg 25-50mg 50mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Intravenous 0-1 min 1-2 min 1-90 min 1-3 hrs 1.5-3 hrs 180-0 min
    Insufflated 2-10 min 10-20 min 30-90 min 2-4 hrs 12 hrs 180-0 min
    Smoked 0-0 min 1-3 min 15-30 min 2-3 hrs 12 hrs -

    Tolerance

    Build-up develops within days of regular use; analgesic tolerance faster than respiratory depression tolerance
    Reset 7–14 days for partial reset; full reset may take weeks — tolerance loss greatly increases overdose risk
    Cross-tolerance
    Morphine Oxycodone Fentanyl Codeine Tramadol Kratom Methadone Hydrocodone

    Effects TheDrug.Wiki TripSit

    Positive
    • Physical euphoria
    • Pain relief
    • Muscle relaxation
    • Analgesia
    • Cough suppression
    Negative
    • Respiratory depression
    • Nausea
    • Dry Mouth
    Neutral
    • Sedation
    • Pupil constriction
    • Itchiness
    • Relaxant
    • Difficulty urinating
    Positive
    • Cognitive euphoria
    • Anxiety suppression
    • Dream potentiation
    • Euphoria
    • Mood lift
    • Cognitive Euphoria
    • Anxiety Suppression
    Negative
    • Constipation
    • Compulsive redosing
    • Dizziness
    Positive
    • Warmth
    • Visual geometry
    Negative
    • Appetite suppression
    • Decreased Libido
    • Appetite Suppression
    • Spatial disorientation
    Neutral
    • Internal hallucination
    • Internal hallucinations
    • Dulled perception
    • Visual and auditory hallucinations

    Combinations TripSit

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