The present invention is adenosine prefilled syringe made in glass that keeps adenosine contamination free prior to and while administration. The said syringe is filled with pre measured concentration of adenosine and hence does not require to be filled from ampoules prior toadministration. The said syringes are prefilled so ampoules are not at all required and hence ampoules are not required to be separately handled and transported making handling easy and economical. The syringe being prefilled has no risk of contamination and help to deliver drug in an aseptic way.
