Methylcellulose

Generic name: methylcellulose [ METH-il-SEL-yoo-los ]
Brand names: Citrucel, Citrucel SF, Citrucel Food Pack, Citrucel Clear Mix, Citrucel Lax
Dosage forms: oral powder for reconstitution (2 g/19 g); oral tablet (500 mg)
Drug class:Laxatives

Medically reviewed by Drugs.com on Sep 3, 2021. Written by Cerner Multum.

What is methylcellulose?

Methylcellulose is a bulk-forming laxative that increases the amount of water in your stools to help make them softer and easier to pass.

Methylcellulose is used to treat constipation and to help maintain regular bowel movements.

Methylcellulose may also be used for purposes not listed in this medication guide.

Warnings

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Before taking this medicine

You should not take methylcellulose if you are allergic to it.

Ask a doctor or pharmacist if it is safe for you to use methylcellulose if you have other medical conditions, especially:

• irritable bowel syndrome;

• trouble swallowing;

• stomach pain with nausea or vomiting;

• a sudden change in bowel habits that lasts 2 weeks or longer; or

• if you have been constipated for more than 1 week.

This medicine may contain phenylalanine. Talk to your doctor before using methylcellulose if you have phenylketonuria (PKU).

Ask your doctor before taking methylcellulose if you are pregnant or breast-feeding a baby.

Do not give this medicine to a child younger than 6 years old without medical advice.

How should I take methylcellulose?

Methylcellulose is usually taken 1 to 3 times per day. Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Overuse of a laxative may cause damage to the nerves, muscles, or tissues in your intestines.

Methylcellulose is a powder medicine that must be mixed with a full glass (8 ounces) of cold water or other liquid. Drink all of the mixture, and then drink one more glass of water.

Taking methylcellulose without enough liquid may cause the powder to swell in your throat and cause choking, especially in older adults.

Seek emergency medical attention if you have chest pain, vomiting, trouble swallowing, or trouble breathing after taking this medicine.

You should have a bowel movement within 12 hours to 3 days.

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