Due to the recent inquiry about difficult with gas and natural digestive enzyme . I deceived to add some links to better explain the causes, foods and give suggestions on how to relieve themselves from it.
I also would like to share that Pure Herbs do have a natural herbal extract to relieve gas and assist with the digestion process.
ginger
strawberry leaves
AG-W
Foods for Natural Digestive Enzyme Therapy
Some fruits are packed with natural enzymes that can aid digestion. The entire pineapple, papaya and kiwifruit plants contain high amounts of a protein-digesting enzyme called a protease. Eaten fresh, or carefully processed from the stems, roots and leaves of these fruits, these foods can be perfect for natural digestive-enzyme therapy. (People with a digestive disorder should consult their doctor before beginning enzyme therapy, however, for some conditions like ulcers can be negatively affected by high levels of enzyme consumption.)
Pineapple
Papaya
Kiwifruit
Read more: Foods for Natural Digestive Enzyme Therapy | eHow.com http://www.ehow.com/way_5312854_foods-natural-digestive-enzyme-therapy.html#ixzz285rJbI2i
Sources of Digestive Enzymes
Digestive enzymes transform the food you eat into nutrients your body can use. Although, the body produces its own enzymes, a diet deficient in enzyme-rich raw foods may lead to gastro-intestinal problems, including gas, bloating, constipation and poor nutrient absorption. Improve your digestive health by consuming more enzyme-rich foods or by taking an enzyme supplement.
Miso
Kombucha
Herbs
Avocado
Papaya
Supplements
National Digestive Diseases
Information Clearinghouse
Everyone has gas and eliminates it by burping or passing it through the rectum. However, many people think they have too much gas when they really have normal amounts. Most people produce about 1 to 4 pints a day and pass gas about 14 times a day.
http://digestive.niddk.nih.gov/ddiseases/pubs/gas/
29 Side Effects of Foods
http://www.healthassist.net/food/side-effects/side-effects.shtml