Psyllium is a type of oral laxative known as a bulk-forming laxative. Prescribed for a wide variety of medical problems, psyllium is derived from an all-natural substance and is marketed over-the-counter under brand names like Metamucil, Maalox Daily Fiber Therapy, Fiberall and Reguloid. Specific psyllium dosages are determined by how old you are, if you have ever taken psyllium before, your medical condition and what other drugs or supplements you may already be taking. Do not use psyllium without first consulting your doctor and do not give children under 12 psyllium unless it is under a doctor's direction and supervision.
Psyllium
Psyllium is made up of soluble fiber taken from the seeds of the Plantago ovata herb. When soluble fiber like psyllium is ingested and comes into contact with water, it forms a swollen, viscous mass. As this mass moves through the intestines, it helps promote the elimination of waste matter. Because of this, psyllium is useful as a treatment for constipation and irregular bowel movements, although its ability to absorb water also makes it a common way to relieve diarrhea. Research indicates that psyllium also may help to prevent colon cancer and heart disease and may be an effective way to lower high blood pressure and high cholesterol.
Dosage for Adults
Most commercial psyllium preparations advise mixing 1/2 to 2 tsp. of psyllium powder into 8 oz. of water or fruit juice once daily either before bedtime or after waking, then quickly drinking the mixture before it becomes too thick. MayoClinic.com recommends drinking another 8 oz. of liquid immediately after consuming the psyllium. Start with the lowest possible dosage if you have never used psyllium before, then gradually work up to the higher recommended amounts of psyllium over a period of several days. Higher or more frequent doses may be used to treat certain conditions like irritable bowel syndrome, but you should only take higher amounts of psyllium under the instruction of a doctor. Always consult your doctor before beginning psyllium use and follow the package directions carefully.
Dosage for Children
When needed, children between the ages of 6 and 12 can take approximately half of the recommended psyllium dosage for adults: 1/2 to 1 tsp. of psyllium powder mixed in 4 oz. of water or juice, one to four times per day. However, children should never be given psyllium unless they have been specifically prescribed this treatment by a physician. Children under 6 should never be given psyllium.
Considerations
Psyllium can cause side effects such as bloating, vomiting, stomach pain, rashes, difficulty swallowing and trouble breathing, and should be avoided by anyone with a history of kidney disease or digestive tract obstructions. Psyllium can interfere with the proper functioning of a number of medications, including digoxin; antidepressants like doxepin or amitriptyline; diabetes drugs; lithium; cholesterol-lowering drugs like cholestyramine; and carbemazepine. When using psyllium, drink plenty of water throughout the day -- at least six to eight glasses -- to prevent constipation. Do not take psyllium for longer than a week unless you are instructed to do so by your doctor.
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