I was sent along to Boots on an errand for Mrs TC who was suffering from a cold, cough and sore throat. I couldn't find the exact thing she was after but the lady behind the counter recommended a simple bottle of glycerine for 99p. She explained that it was the main ingredient in most remedies...
I have heard that local honey helps relieve symptoms of hayfever as it acts similar to an inoculation. I really can’t see what the reasoning behind local honey for a cold is. Othe than the beekeeper trying to flog it was local :-)