DOSINA

MDMA

Empathogen · popular

A serotonin-releasing empathogen: warmth, empathy, talkativeness and euphoria, usually for 3-5 hours. The single most commonly adulterated party drug. Neurotoxic with heavy or frequent use, and seriously dangerous in combination with MAOIs, lithium, tramadol or DXM.

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Dose and effect data: PsychonautWiki (CC BY-SA 4.0) and TripSit (PolyForm Noncommercial 1.0.0).

Before you dose

⚠This substance has combinations that are life-threatening. Check the Interactions tab before mixing anything.

Dose

Published population range

Threshold20 mg
Light20–80 mg
Common80–120 mg
Strong120–150 mg
Heavy / risk zone≥ 150 mg

Basis: 1.5 mg/kg is the standard harm-reduction reference for a common dose; controlled trials use 75-125 mg fixed. We scale the published 70 kg range to your body mass.

Never exceed ~200 mg total in a session, and leave 6-12 weeks between rolls regardless of body weight.

Showing published ranges.

Check an amount you already have

Timeline (oral)

Onset30–45 minutes
Come-up15–30 minutes
Peak90–150 minutes
Offset60–90 minutes
Afterglow720–2880 minutes
Total180–360 minutes

Bars show relative time in each phase, scaled to the total duration. Each phase keeps its colour in the list above.

Expected effects

  • Intense euphoria and wellbeing
  • Empathy and emotional openness
  • Increased sociability and talkativeness
  • Enhanced tactile sensation
  • Increased music appreciation
  • Stimulation and energy
  • Greatly reduced anxiety
  • Heightened sensory perception
  • Feeling of connectedness to others

Possible side effects

  • Jaw clenching and teeth grinding
  • Nausea, especially on the come-up
  • Raised heart rate and blood pressure
  • Overheating (hyperthermia) when dancing
  • Reduced appetite
  • Difficulty urinating
  • Insomnia
  • Low mood in the following days
  • Hyponatraemia from drinking too much water
  • Memory and concentration problems with frequent use

Known toxicity

  • exact toxic dosage is unknown

Harm reduction

  • Test it. Reagent tests catch the obvious substitutions; only a fentanyl strip catches fentanyl, and only lab testing tells you purity.
  • Keep the session total under about 200 mg. A single re-dose no more than 90-120 minutes in is the common harm-reduction pattern.
  • 250-500 ml of water per hour in a hot environment. More is not better - hyponatraemia kills people at parties every year.
  • Take a 10-minute break from dancing every hour or so and let your body temperature drop.
  • Do not use it if you take an SSRI, SNRI, MAOI, lithium or tramadol. This is not a caution, it is a contraindication.
  • Wait 6-12 weeks between sessions. Consecutive weekends are how mood and memory problems start.
  • Test your substance with reagent tests and, if available, a lab service. MDMA is very commonly substituted or adulterated.
  • Keep the total session dose under roughly 200 mg and stop re-dosing after one top-up. More does not mean better, and it does mean more neurotoxicity.
  • Hydrate, but do not over-drink. Around 250-500 ml per hour in a hot club is the usual guidance; drinking several litres fast causes dangerous hyponatraemia.
  • Take breaks from dancing and cool down. Overheating is a leading cause of MDMA emergencies and deaths.

Identify what you have

Marquis (TripSit reference)Black (may have purple tint)
Marquis (reacts)instant purple/brown > black (36)
Mecke (reacts)instant green > blue/black (72)
Mandelin (reacts)instant purple/blue > black (87)
Liebermann (reacts)instant black (121)
Froehde (reacts)instant black (36)
Gallic (reacts)green>brown (4)
Ehrlichno color change (168)
Robadopeno pink color change (121)
Simon's (reacts)instant dark blue (61)
Hofmannno color change (137)
Zimmermann (reacts)no change / faint yellow (20)
Morris (reacts)pale green (77)
Scottno color change (65)
Folin (reacts)orange (10)

Reagent tests show what a substance probably is, not how pure it is or what else is in the mix. Fentanyl and nitazene test strips are the only reliable check for those, and quantitative lab testing is better than both.

Mixing

TramadolDangerous

Tramadol and stimulants both increase the risk of seizures.

MAOIsDangerous

MAO-B inhibitors can increase the potency and duration of phenethylamines unpredictably. MAO-A inhibitors with MDMA will lead to hypertensive crises.

DXMDangerous

See interaction notes for details.

amtDangerous

See interaction notes for details.

25x-NBOMeUnsafe

See interaction notes for details.

PCPUnsafe

This combination can easily lead to hypermanic states

Serotonin releasersUnsafe

See interaction notes for details.

2C-T-xUnsafe

See interaction notes for details.

5-HTPUnsafe

See interaction notes for details.

5-MeO-xxTCaution

Some of the 5-MeO tryptamines are a bit unpredictable and should be mixed with MDMA with care

AlcoholCaution

The combination of MDMA and alcohol may increase strain on the cardiovascular system and lead to increased alcohol consumption. MDMA may also impair one's ability to recognize their level of drunkenness, leading to increased alcohol consumption and poor decision-making. Alcohol may also increase the risk of dehydration and hyperthermia (increased body temperature) when combined with MDMA.

CocaineCaution

Cocaine blocks some of the desirable effects of MDMA while increasing the risk of heart attack.

Tolerance, dependence and detection

Tolerancehalf tolerance after 1 month; back to baseline after 2.5 months
Addiction potentialmoderately addictive with a high potential for abuse
Detection window1-3 days single use, 3-5 days heavy use
After-effects1-72

Sources

• PsychonautWiki — MDMA (CC BY-SA 4.0)
https://psychonautwiki.org/wiki/MDMA

• TripSit wiki — MDMA (PolyForm Noncommercial)
http://wiki.tripsit.me/wiki/MDMA

• Erowid experience reports (external)
https://www.erowid.org/experiences/subs/exp_MDMA.shtml

Dosina is educational harm-reduction information, not medical advice. Doses are population ranges from published sources and cannot account for your tolerance, health conditions or what is actually in your substance. Possession and use may be illegal where you live.