A Second Class stamp <a href=" http://awsg.org.au/paxil-prescribing-information.pdf ">paxil excessive tiredness</a> "It's likely that more than half of tumors have some alteration we can target with a drug," says John V. Heymach, a lung-cancer specialist at MD Anderson Cancer Center, Houston. "They may not all have the same success, but we know that in many cases, a targeted agent will work very well."