Collagen is a protein found in connective tissues of the body. It is significant in making certain parts of the body such as nails strong and is also an important factor in joint health. Collagen supplements come in various forms. One of the most common is called Gelatin.
Calcium supplements come in several different forms, including calcium carbonate and calcium citrate. Calcium citrate is the easiest for your body to absorb and digest, making it less likely to cause adverse side effects like gas. However, calcium citrate only contains 21 percent elemental calcium, while calcium carbonate contains 40 percent. Elemental calcium is the actual amount of calcium present in a supplement.
Not all types of fiber cause gas. Fiber comes in two types, soluble and insoluble. Foods that contain soluble fiber tend to produce more gas than foods high in insoluble fiber. Some sugars as well as fiber can cause gas; foods that contain both soluble fiber and sugars that cause gas have extra gas-producing potential. The types of bacteria you have in your gut -- which varies from person to person -- can also affect how much gas you produce.