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how much is a lethal does of MDMA?

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pillsnpowder

Greenlighter
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Jun 2, 2013
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since my friends and i are starting to build a tolerance to MDMA we are upping our doses, i know most people say you gotta wait 2 months but we take it most weekends and still get pretty darn high. we will dose an average of 200-300mg in a night when we do it (not all at once) i was wondering at what point do the dosages start getting deadly? im 5'10 160lbs and my friend is 5'9 135lbs
 
I think it's in the directory sticky at the top of the page otherwise check erowid which will have the ld.
 
I think you would have a stroke or seizure long before you died from MDMA. I do wonder, with intravenous administration, what would be a lethal dose? Lots of subjectiveness in the answer to that equation I presume.
 
The real answer is...we don't know yet :(


The only studies we have were done with rats and under less than ideal conditions. some say 10mg/Kg others 20mg/Kg. I seen a post here where a guy took 4g MDMA in a night and was still kicking.

with the info we have...we just can't tell. but we do know that it is way more than what 99% of the people would ever take. first you can only stay high on MDMA for so long so taking more and more is counter productive. next taking a huge amount is not very pleasant and extremely hard on the body. most people just feel too shitty to even move let alone take more drugs.

we don't know what the LD50 is for sure but the great majority of people will never come close to taking enough to kill them.


You really shouldn't be worried about the LD50. If you are taking MDMA every weekend and 200-300mg at a time...you will soon find out about all the bad things that come with MDMA. it won't be too long before we see this guy back in here with a "help...I fuck up my brain" post.

see here: http://www.bluelight.ru/vb/threads/683148-Mostly-recovered-after-1-5-years
and here: http://www.bluelight.ru/vb/threads/682940-Update-MDMA-Abuse-Here-is-my-story

I could fill this thread up with "I fucked up my brain" post. learn how to use MDMA right before you end up like these people.
 
Last edited:
Dropped 1.2 grams or so on my first run. (yeah, I know - It's a bit late now).

Still alive, but god damn this shit fucked me and my girl up. She took about .8-1.0g.

I weigh, 200 and she is right under 150.
 
What are you talking about 10mg/kg

We would have 100s of deaths every week, that's only like 700-800mg for your average guy, people might get messed up but they don't die from that kinda dose.
 
The only studies we have were done with rats and under less than ideal conditions.
Click to expand...

we're not rats, and btw the studies used pure mdma, not pills or whatever. Btw, I've checked and the LD50 in small mammals is 100-300 mg/kg. Just to remember, 5 mg/kg would be already overdoing it :P
 
I believe the LD 50/50 is around 5.5g, but obviously changes due to weight etc. That's a 50% sample population death. Lower than that can still kill you, and lower than could probably render you so unable to function you probably wish you were dead.

If it's any consolation I'd imagine your stomach would reject the MDMA before you got anywhere close to 5.5g anyway. Purity obviously affects the LD50/50, if you're consuming MDMA cut to fuck with sugar or other things then you're not actually consuming the proper points of MDMA.
 
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