What you also need is a list from the CAA of banned or prohibited medication. Since there doesn't easily appear to be such a list on your website perhaps you should consult your doctor for a dietary suggestion or medical remedy and give your AME or the CAA a call to ensure that any specific product has no limitations or restrictions. The previously mentioned anti spasmodic works well although were you older and had you prostate problems such a product would possibly not be such a good idea. Check it out, but softly softly lest the CAA get worried that your wind problems might cause you to catastrophically blow up in the cockpit or become so pain ridden as to become incapacitated. They might like to see you referred to and signed off by a gastro enterologist, which might be a thought anyway.