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.
Metamucil is a dietary supplement that is sold over-the-counter. It is commonly used to treat constipation and diarrhea and can also help lower cholesterol. Metamucil is 100 percent psyllium husk fiber, a soluble fiber that provides regularity. Depending on the cause of your diarrhea, using Metamucil may or may not be helpful.