bb did Erdogan not give you any love? :P
Adenosine blocks the AV node in the heart, stopping ventricular response, therefore stopping cardiac output. Adenosine only lasts about 20 seconds in the body, and it blocks the heart for about 5 seconds with a 6mg dose. So, you reckon a 50mg dose or so could stop the heart long enough to stop it beating and it doesn't start beating again? And then, the body would eventually process the adenosine while in cardiac arrest, leaving only tiny traces of it, if any at all apart from the puncture site from the needle. You reckon this would work? This is all just theory at the moment.