I dropped a blood pressure pill in a hotel room sink. Without thinking, I rinsed the pill off and took it. I can t believe I did that! However, I had 2 spots on my both knees that looked like bug bites. I was in Hawaii and got out in the sun. I developed a red sunburn-like patch on my right knee. I then got a sore throat, headache, runny nose and cough. Now, I am taking a Z-Pak and have a rash. I have taken a Z-Pak in the past with no problem.