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    STS-135 Encyclopedic
    Encyclopedic
    Typical encyclopedia coverage. Cross-reference for important decisions.
    • 2 corroborating sources
    • 1 ROA with full dose ladder
    • duration data present
    • 16 combo interactions documented

    Summary PsychonautWiki

    STS-135 (also called N-(adamantan-1-yl)-1-(5-fluoropentyl)-1H-indole-3-carboxamide or 5F-APICA) is a drug that acts as a potent agonist for the cannabinoid receptors which produces subjective effects somewhat similar to that of cannabis with a short duration and an emphasis on intense physical sensations. There is very little information regarding the pharmacology of this compound within the scientific literature. Despite this, however, it is available for sale as a grey area research chemical through online vendors.

    Dose Information PsychonautWiki

    ROA Light Common Strong Heavy
    Smoked 0.5-1.5mg 1.5-2mg 2-4mg 4mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Smoked - 12-48 min 12-30 min 6-12 min 12-48 min 30-60 min

    Import into PsychonautWiki Journal

    The PsychonautWiki Journal app includes STS-135, but its built-in data can be thinner than ours. Importing this file adds a separate "STS-135 (Substance Search)" custom substance with our dose ranges, durations and tolerance, so you can log against whichever you prefer.

    ⬇ Download import file Import this file as custom substances and you get "STS-135 (Substance Search)" with every route's full dose ladder and timeline, no typing. Works on iOS and Android (v15+); the format is confirmed by the app's developer.

    Ranges are harm-reduction guidance, not a prescription.

    Tolerance

    Build-up develops over weeks of regular use via CB1 receptor downregulation
    Reset 2–4 weeks for most users; heavy users may need longer

    Tolerance Decay

    Full tolerance 3d Half tolerance 21d Baseline ~28d

    Effects

    Positive
    • Pain relief
    • Stimulation
    Negative
    • Dry mouth
    • Tachycardia
    • Nausea/vomiting
    • Strong dysphoria on comedown
    • Nausea
    Neutral
    • Red eyes
    • Spontaneous bodily sensations
    • Vasodilation
    Positive
    • Thought connectivity
    • Mindfulness
    • Conceptual thinking
    • Euphoria
    Negative
    • Anxiety
    • Paranoia
    Neutral
    • Rapid, intense intoxication
    • Anxiolysis or severe anxiety/panic
    • Time distortion
    • Dissociation at high doses
    Positive
    • Increased music appreciation
    • Auditory acuity enhancement
    Negative
    • Dehydration
    Neutral
    • Visual sharpening or mild pseudo-hallucinations
    • Dulled perception
    • Auditory distortion
    • Changes in felt gravity
    • Perception of bodily heaviness
    • Appetite intensification
    • Drifting

    Combinations

    Cross-Check STS-135 with another substance

    Helpful Links