I use apple cider vinegar (ACV) to address gastro-intestinal as well as respiratory illnesses. If I feel a bit bloated or am concerned that I saw pink in the chicken (but ate it anyway), I take a tablespoon of apple cider vinegar as a precautionary measure. If I feel a cold coming on, I may opt for increased doses of Vitamin C, or a few tablespoons of ACV followed by a tall glass of filtered water. Check the links below for these and other uses for apple cider vinegar.
Recommended Resources:
http://www.earthclinic.com/remedies/acvinegar.html