Complete dosage information for 2-FA — threshold, light, common, strong, and heavy dose ranges across 1 route of administration.
Full 2-FA 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.
Stimulant overdose is a **medical emergency**. 2-FA's shorter duration compared to compounds like 2-FMA or methamphetamine means that acute symptoms may resolve faster, but this does not reduce the need for immediate medical attention -- cardiovascular collapse, seizures, and hyperthermia can kill within the acute window regardless of the drug's half-life. ## Warning Signs Seek emergency help immediately for any of the following: - **Extremely rapid or irregular heartbeat** -- palpitations, chest pounding, skipped beats - **Severe chest pain or pressure** - **Hyperthermia** (high body temperature) -- hot skin, confusion, disorientation - **Seizures** - **Severe agitation, paranoia, or psychosis** -- loss of contact with reality - **Intense headache with vision changes** (possible hypertensive emergency) ## What To Do **Call emergency services immediately.** Good Samaritan laws in most US states protect callers from prosecution for drug-related emergencies. While waiting for help: 1. **Cool the person down.** Move them to a cool environment. Apply cold water or ice packs to the neck, armpits, and groin -- major blood vessel sites for heat exchange. Hyperthermia dramatically worsens all stimulant toxicities. 2. **Keep them calm.** Reduce sensory stimulation -- dim lights, lower noise, speak in a calm voice. Avoid physical restraint, which worsens hyperthermia and cardiac strain through struggling. 3. **If they are seizing**, protect their head and clear surrounding hazards. Do not put anything in their mouth. 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 therapy for agitation, seizures, and hypertension. Active cooling addresses hyperthermia. Beta-blockers are generally avoided due to risk of unopposed alpha-adrenergic vasoconstriction. **No specific antidote exists** -- all management is supportive. 2-FA's shorter duration (3-6 hours) means symptoms may improve sooner than with longer-acting stimulants, but this should never delay seeking medical care.
A common oral dose of 2-FA is 30–50 mg.
The threshold dose for 2-FA via oral is approximately 5 mg.
2-FA typically lasts 2–4 hours via oral.
