Levofloxacin
"Was feeling horrible for a few days. Thought it was a nasty sinus bug until the blood started coming up. Went to the doctor and turns out I had the flu AND pneumonia. I was prescribed 500 mg for ten days. I am on day 8 of 10 and this stuff is AWESOME. I felt brand new on day 3. By day 4 my breathing was back to normal and the blood was out of my mucus. The only "bad" side effect is sleep! Pop on Netflix and have a "special" brownie or cookie and relax. You won't even feel sick."