Nitrofurantoin
"I took Macrobid for 7 days, and it alleviated my urianry tract infection (very happy that).   Four days after finishing the Macrobid, I started to itch all over my body from the top of my head to the soles of my feet. There's no rash present but my skin gets very sensitive and red even before I scratch (super red). Five days after taking the medication, I am experiencing tightness in my esophagus and burning; as if I had a bad case of acid reflux (I have a minor level of acid reflux). "