Children's Hospital Colorado

Psyllium (Metamucil)

Disclaimer: The below information is not intended as a substitute for professional medical advice. It is provided for educational and reference purposes only. You assume full responsibility for how you choose to use this information. Please call your primary care provider or our ParentSmartTM Healthline with any questions. Pediatric nurses are available 24/7 at 720-777-0123.

You can take psyllium fiber to help treat constipation on a long-term basis.

You can take psyllium (Metamucil) instead of eating more fiber. Fiber can help soften your stools. Fiber works by holding more water in your stools.


  • Metamucil Powder: Stir and dissolve one teaspsoon of powder (17 g) in a cup (8 oz; 240 ml) of or water. Drink.
  • You can use this up to three times a day. However, it is better if you slowly increase how much you take over 1-2 weeks.

Extra Notes and Warnings:

  • This is an over-the-counter (OTC) drug. You can buy it at the drugstore.
  • Be patient. Sometimes this takes a couple weeks before it starts to work.
  • Do not use for more than 4 weeks without talking to your doctor.

Common Brand Names:

  • Metamucil

Read the instructions and warnings on the package insert for all medicines you take.