Found a white oblong pill with L484 on it?
Answer: The pill you found is most likely 500mg acetaminophen...aka generic tylenol ES..
It's acetaminophen, here's a link from Webmd that give specifics:
http://www.webmd.com/drugs/drug-7076-Tyl... just throw it away. whats the big deal?
whichwaytohealth.com