Five Metamucil Capsules are about comparable to one Metamucil Powder serving. Depending on the advantages desired from the product, a varied number of capsules might be used. To increase dietary fiber to the diet, consume as few as two capsules each serving. For maximum benefit, take three capsules every day. Metamucil capsules contain glycerin and magnesium aluminum hydroxide, both of which can help promote bowel regularity. By absorbing water into their bodies, the compounds expand in size and create an obstruction that prevents food particles from entering the colon. As a result, fibers are left behind for elimination. The powder form contains the same ingredients as the capsule but in a powdered form. This allows users to add more fiber to their diets by sprinkling it across their foods. The powder also has a longer shelf life than the capsule form so it is not necessary to use it up before its expiration date. Both forms of Metamucil are made by the same company (Abbott Laboratories) and contain the same amount of nutrients. However, due to their different appearances and tastes, some people may prefer one type over another. In conclusion, Metamucil pills are as effective as the powder in providing fiber to those who suffer from constipation. They are simply given orally instead of via enema or suppository which makes them more convenient.