I used to be prone to these myself. Most people find that LCing improves allergy problems and leaves you less prone to upper respiratory infections.

In the meantime, these are the LC solutions for sore throats that I've found. The first is to gargle with warm salt water. This doesn't help much with the soreness but kills germs like crazy and will help you recover quicker.

The second is to go to your local natural food market of health food store for herbal teas that are made for sore throats. Look for licorice root in the ingredient list. Tastes terrible but it's VERY EFFECTIVE. And carb-free. The least offensive tasting is one made by Celestial Seasonings called something like "throat-soother" with honey-lemon flavor. (No actual honey.)

Feel better soon!

Allison