Baby gas relief drops, also known as Simethicone, you can buy it at any drug store or supermarket pharmacy section. It is meant for babies to help them get the gas out of their tummies, it is very mild and very safe for rabbits. Basically it collects the gas packets together and helps get the gas out of the rabbit's stomach. I like to get the brand " Little Tummies" because the gas drops is berry flavoured. If your rabbit has a stomach problem you should still bring them to a vet, the gas drops is only a precautionary thing you can do if you cannot go to a vet right away.
Gas doesn't build up over a long period of time. Usually if food is causing gas build up, you will know within a few hours that your rabbit is ill. So there is no point in giving it once a year because it doesn't really do anything when there is no gas.
Some good reads on what to do if you suspect GI Statis:
http://www.ehow.com/how_2341404_care-rabbit-gi-stasis.html
http://www.bio.miami.edu/hare/ileus.html |