"I'll give it to you in your upper arm," Erica said. She pushed her way into the ER and gestured to one of the rooms. "In there. You need four more within a month of today, all on different days. The side effects can be pretty unpleasant--things like muscle pain and stiffness, joint stiffness and inflammation, weakness or even paralysis in your legs, and fast heartbeat, among others. Sorry about it," she added, not without sympathy. "It's not going to be fun."