hopefully you have actual MDA. you should use Marquis, then Simons reagent test kits for confirming MDA.
MDA is also very stimulating. i'm talking upper level tweaked.
i would not even touch cocaine on other stimulants. never understood why people do it.
choose one or the other IMO. they're both better on their own.
the combo can cause uncomfortable tachycardia which causes people to panic.. not to mention the how toxic these drugs are. coke being bad for the heart and MDA being bad for the brain..
snorting MDA just sounds dreadful as well.. these empathogens work better on empty stomach orally, mate.
cocaine has a higher BA for the nasal route (hence the avg joe sniffs blow). it's more or less the only drug that scientifically should be snorted (along with ketamine). the needles obviously have highest BA but those ROAs are dangerous..
so all in all, parachute the MDA on empty stomach.. it is very strong.. it can be stronger than MDMA. my experience with MDA was a M-bomb of (~80mg MDA/~30mg MDMA) - i was FUBAR. looked like i was on cocaine but i was flushed like i was rolling...
i definitely would not add cocaine to that wire...