I took half a dose of alka seltzer cold and didnt realize it had aspirin in it. i am 24 yrs old with a cold.. i am afraid of developing reyes syndro

No worries: Reye syndrome is a rare condition that affects a few children who are recovering from an illness like influenza or chicken pox, who had been taking aspirin or other salicylates. An adult getting Reye syndrome after a single dose of aspirin would be so rare that nobody should fear it. As they say, "Don't sweat the small stuff." No worries.