My husband had a severe sore throat. It was so swollen that it made his voice sound odd. He had two different antibiotics (the first one did not work) and the severe pain decreased. At the same time he had a protist intestinal infection, and he took flagyl after the other two antibiotics. He now has a constant sore throat with feelings of gagging. He is overweight, previous heart attack (2001), history of stomach acid problems. He takes nexium, and they also have him taking Claritin plus the usual heart stuff