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Psychedex
Facts label

A-PHP Facts

Stimulant; Substituted cathinone; Dopamine reuptake inhibitor

Dose and durationby route · individual sensitivity varies

Oral(mg)
Threshold< 3 mgLight5 – 10 mgCommon10 – 25 mgStrong25 – 45 mgHeavy45+ mg

Starts in 20 – 45 minLasts 4 – 8 hoursAfter-effects 12 – 48 hours

Also recorded: Smoked · Insufflated. See full page: psychedex.org/substances/a-php

Body and dependence

Acute toxicity
Moderate
Chronic toxicity
Moderate
Physical dependence
Low
Psychological dependence
High
Withdrawal
Moderate
Compulsive redosing
High

Tolerance

Builds
Rapid
Fully resets after
Not recorded
Carries over to
cocaine; α-PVP; MDPV; amphetamine; methamphetamine

Effectslikely at a common dose

Perception
Dreaming suppression; +8 possible, including Visual haze / noise
Body
Stimulation; Appetite suppression; Restlessness; Vasoconstriction; Wakefulness; Insomnia; Pupil dilation; +20 possible, including Excessive sweating, Heart rate perception changes, Muscle tension
Thinking
Cognitive euphoria; Compulsive redosing urge; Thought acceleration; Cognitive fatigue; +21 possible, including Cognitive dysphoria, Information processing suppression, Cognitive impairment
Feeling
Euphoria; +8 possible, including Anxiety, Depression, Anhedonia
Self
none likely · 9 possible, including Craving, Ego inflation, Compulsive repetitive behavior
Time
none likely · 1 possible

Who shouldn't take it

Absolute
Cardiovascular disease; Psychotic disorders; Bipolar disorder; Pregnancy; MAO inhibitor use
Relative
Epilepsy; Concurrent stimulant use

Combinations62 recorded

Lethal (2)
Ibogaine; Tramadol
Dangerous (29)
Alpha-2 adrenergic receptor antagonist; Amphetamines; Benzodiazepines, Barbiturates; Ephedrine, Pseudoephedrine; Local anesthetics; MAOIs; MDMA, Amphetamines; MDMA, MDA; NDRIs (Wellbutrin); NRIs; Opioids; SSRIs; Stimulants; Anticholinergics; Antipsychotics; Buspirone; Caffeine; Dopamine agonists; DXM; GHB, Baclofen; GHB, GBL; Ketamine, DXM, PCP; Lithium; NSAIDs; and 5 more, see full page
Caution (28)
See full page: psychedex.org/substances/a-php
Not graded (3)
Not listed never means safe.

Seek help immediately if

  • Chest pain; racing, pounding, or irregular heartbeat
  • Very high body temperature; heavy sweating; hot, flushed skin
  • Severe agitation, paranoia, panic, or confusion
  • Severe headache; muscle rigidity or twitching
  • Seizures
  • Signs of stroke — face drooping, one-sided weakness, slurred speech
  • Difficulty breathing; collapse or unconsciousness

What to do

  1. Call emergency services for chest pain, overheating, seizure, or unresponsiveness
  2. Move them to a cool, quiet place and reduce stimulation
  3. Cool the body — remove excess clothing, apply cool damp cloths, fan them
  4. Keep them calm; reassure — panic worsens the cardiovascular strain
  5. If seizing, protect from injury (don't restrain); recovery position afterward
  6. Monitor breathing and be ready to give rescue breaths / CPR

Most stimulant overdoses settle with cooling, a calm environment, and time. The medical danger is hyperthermia, cardiac events (arrhythmia, heart attack, stroke), and seizures — get help immediately if any appear.

988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE

psychedex.org/substances/a-php · Version r1 · Not medical adviceValues as of
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