What are the possible side effects of Citrucel (Methylcellulose)?
If you experience any of the following uncommon but serious side effects, stop taking methylcellulose and seek medical treatment or contact your doctor immediately: an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives) chest pain difficulty swallowing rectal bleeding; or severe abdominal pain, nausea or vomiting This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.