Is it safe to drink beer while on MDMA?

Yes, it is safe as long as it is only MDMA, MDA, or a meth based pill or powder. But you should limit your intake of beer or alcohol to 1-2 beers or shots every 2 hours to stay on the safe side, also make sure you are drinking 12-20 oz. of water every hour or so to stay hydrated.

MDMA is a fairly safe drug as long as to much is not taken and you keep hydrated and do not over exert yourself.

play it safe.