Why my face gets red and eyes get blood shot after trying a little bit of alcohol & sometimes I get profused heart beat and breathing trouble? I used to drink heavily(but never used to get drunk) since June 2012. I had some medication for sinus infection during July-August. And I started taking Fybogel (http://www.netdoctor.co.uk/digestive-health/medicines/fybogel.html) regularly.