The terms proximal (from Latin proximus, meaning 'nearest') and distal (from Latin distare, meaning 'to stand away from') are used to describe parts of a feature that are close to or distant from the main mass of the body, respectively.
But, with Citrucel and/or Metamucil you can start with one teaspoon mixed in water or juice. If you have diarrhea don't use the preparation with artificial sweeteners. Use the one with sugar. I think artificial sweeteners (some of them) might cause more diarrhea.
Quick Answer. Metamucil and Citrucel are both good choices to help relieve constipation, according to Mayo Clinic. Both are fiber supplements that absorb water. This aids in the development of soft, bulky stools, which stimulates the muscles of the intestines to contract and push out the feces. Continue Reading.