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Metamucil is an over-the-counter psyllium fiber product available in powders, packets, capsules, and other formulations. This page focuses on Metamucil Therapy for Regularity orange-flavored powder packets. Each packet contains approximately 3.4 g of psyllium husk and is labeled to relieve occasional constipation.
read more about metamucil ...Psyllium is a soluble, bulk-forming fiber that absorbs water and forms a gel-like substance in the intestines. This increases stool bulk and moisture, promoting more regular bowel movements. Its effect on occasional constipation usually develops within 12 to 72 hours.
Metamucil Therapy for Regularity is used by adults and children for occasional constipation under age-specific directions. People with difficulty swallowing should not use the powder. Patients experiencing abdominal pain, nausea, vomiting, or a persistent change in bowel habits require medical advice before use.
For the current 3.4 g psyllium packet formulation, adults and children age 12 and older mix one packet with at least 8 ounces of water or another liquid, up to three times daily. Children age 6 through 11 use half a packet per dose. Children younger than 6 require medical guidance. New users begin with one dose daily and increase gradually when needed. Other Metamucil formulations have different serving sizes.
Taking psyllium without sufficient liquid can cause choking or blockage of the throat or esophagus. Allergic reactions can also occur in people sensitive to psyllium. Bloating and changes in bowel habits can develop when fiber intake increases. Other oral medicines are taken at least two hours before or after this product. Rectal bleeding or constipation lasting more than seven days requires medical evaluation.
Metamucil Therapy for Regularity relieves occasional constipation and promotes regular bowel movements.
The current psyllium packet label states that a bowel movement usually occurs within 12 to 72 hours.
Adults and children age 12 and older mix one packet with at least 8 ounces of liquid, up to three times daily.
Psyllium swells when exposed to liquid. Taking it without adequate fluid can cause choking or blockage of the throat or esophagus.
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Fiber Supplements: Safe to Take Every Day? Mayo Clinic. https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/fiber-supplements/faq-20058513. Date Accessed October 14, 2026.
Laxatives. StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK537246/. Date Accessed October 14, 2026.
Psyllium. MedlinePlus. https://medlineplus.gov/druginfo/meds/a601104.html. Date Accessed October 14, 2026.
Psyllium Powder for Suspension. Cleveland Clinic. https://my.clevelandclinic.org/health/drugs/18922-psyllium-powder-for-solution. Date Accessed October 14, 2026.