Plants - Drugs Mind - Spirit Freedom - Law Arts - Culture Library  
Review Erowid at
Help us be a "Top Rated Nonprofit" again this year and spread
honest info (good or bad) about psychedelics & other psychoactive drugs.
("Share Your Story" link. Needs quick login creation but no verification of contact info)
MDMA Dosage
by Erowid

MDMA generally comes in the form of small tablets, capsules, or white powder. When found in tablet form (often referred to as "ecstasy"), it is common for MDMA to be combined with any of the following substances : MDMA, Caffeine, MDA, Methamphetamine, DXM, MDE, Pseudo/Ephedrine, Ketamine, BZP, and TFMPP. Chemical analysis of ecstasy tablets has found from 0 - 120 mg of MDMA as well as a variety of the above substances. Trying to calculate dosages from tablets containing unknown quantities of MDMA can be difficult, but a high quality tablet of street ecstasy (those containing MDMA alone) generally contains between 80 and 120 mg of MDMA. Some unusual tablets (especially in Europe) contain 150mg or more. The chart below shows what are considered recreational/therapeutic dosages for pure MDMA HCl (the most common crystalline form), measured in milligrams. Note that most Ecstasy and even crystalline MDMA is not 100% pure and may contain fillers or other drugs. See (formerly EcstasyData).

Oral MDMA Dosages
Threshold30 mg
Light40 - 75 mg
Common (small or sensitive people)60 - 90 mg
Common (most people)75 - 125 mg
Common (large or less sensitive people)110 - 150 mg
Strong150 - 200 mg
Heavy200 + mg

Onset : 20 - 70 minutes (depending on form and stomach contents)
Duration : 3 - 5 hours
Normal After Effects : up to 24 hours

Overdose Effects:
Vomiting, headaches and dizziness may result from too high a dose of MDMA. Some people are considerably more sensitive to MDMA than others. Be careful if you are using MDMA for the first time or using material of an unknown purity and strength. Always start low.

Every individual reacts differently to every chemical.
Know your Body - Know your Mind - Know your Substance - Know your Source.

Erowid's dosage information is a summary of data gathered from users, research, and other
resources and should not be construed as recommendations. Individuals can respond
differently to the same dosage. What is safe for one can be deadly for another.

Start low with new substances.
Have trusted companion/guide/sitter/friend present and/or available.