For both pills, people have to start treatment within five days of showing symptoms. Both treatments are given as five-day regimens, with Merck's being 40 pills and Pfizer's being 30 pills.

Sure, Elvis was gone by 42, but he took all the wrong pills. Which reminds me -- when you hit 40, pills are a big part of the program. My wife lines up 11 of them for me every flippin' morning.

Found a stray pill in your medicine cabinet? Have a loved one who mixed up a couple of their meds by mistake? There are plenty of reasons you might wonder, “What pill is this?” WebMD’s Pill ...