this works every time for me:
-drink massive amounts of water (about one bottle every 3 hours)
-occasionally drink hot water with lots of honey
-drink more water
-use the bathroom as many times necessary (helps flush out toxins)
-use Listerine about 3 times daily
-drink more water
-drink some tea
-your sore throat will be gone in a day!
(every time i felt a slight sore throat coming i used this method and i have never been sick for many many years! if it gets serious then see a doctor as others have mentioned but as a rule i try to avoid heavy medicine and chemical cocktails if you know what i mean)