Complete dosage information for Amphetamine — threshold, light, common, strong, and heavy dose ranges across 3 routes of administration.
Full Amphetamine profileImportant Safety Notice
Dosage information is for harm reduction purposes only. Individual sensitivity varies greatly. Always start with the lowest effective dose and work your way up slowly. Never eyeball doses — use a milligram scale.
Amphetamine overdose is a **medical emergency** with no specific reversal agent. Death occurs through cardiovascular collapse, hyperthermia, or seizures. Tolerance can raise survivable doses tenfold, but a dose a tolerant user considers routine could kill a stimulant-naive person. ## Warning Signs Seek emergency help immediately for: - **Severe chest pain** or pressure - **Extremely rapid or irregular heartbeat** - **High fever (hyperthermia)** -- the most dangerous sign, driving multi-organ failure - **Seizures** - **Severe agitation, paranoia, or psychosis** - **Dark urine with muscle pain** (rhabdomyolysis) - **Loss of consciousness** ## What to Do **Call 911 immediately.** Good Samaritan laws protect callers in most US states. While waiting: 1. **Cool the person down** -- the single most important intervention. Move to a cool environment, apply cold water or ice packs to neck, armpits, and groin. 2. **Keep them calm.** Dim lights, lower noise, speak calmly. Avoid physical restraint -- struggling worsens hyperthermia and cardiac strain. 3. **If seizing**, protect their head and clear hazards. 4. **If unconscious and not breathing**, begin CPR. 5. **Offer water** if conscious and able to swallow. ## Hospital Treatment Emergency departments use **benzodiazepines** as first-line treatment for agitation, seizures, and hypertension. Active cooling for hyperthermia. Beta-blockers are avoided due to risk of unopposed alpha-adrenergic vasoconstriction. Severe cases may require neuromuscular paralysis and ICU monitoring. ## The Polydrug Problem Many amphetamine emergencies involve combinations. Amphetamine with **alcohol** is particularly dangerous -- the stimulant masks sedation, leading to overconsumption. Users who take depressants to "come down" risk delayed respiratory depression when the stimulant wears off first.
A common oral dose of Amphetamine is 10–25 mg.
The threshold dose for Amphetamine via oral is approximately 2.5 mg.
Amphetamine typically lasts 6–8 hours via oral.
Amphetamine can be taken via oral, intravenous, insufflated. Each route has different dosage ranges and onset times.