Check out:
http://www.healthcentral.com/acid-reflux/introduction-000085_9-145.html?ic=4031
The above is the natural ways to treat reflux symptoms. They are probably the most "natural" way to prevent reflux since many of the causes have to do with our lifestyle and diet choices in addition to likely a predisposition to a weak GI system.
Others have suggested Camomille tea, peppermint tea, ginger, etc.; however, like most herbal remedies there is little to no research to substantiate these suggestions.
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