Psyllium is a medicine commonly used to treat constipation or other intestinal problems.

It’s a form of fiber that’s made from the husks of the Plantago ovata plant’s seeds.

Psyllium is a bulk-forming laxative that works by absorbing water in the intestines and forming a bulky stool, which is easier to pass.

Sometimes, psyllium is also used along with diet and exercise to help lower cholesterol levels.

Psyllium is sold under various brand names.

warnings

What is the most important information I should know about Psyllium (Metamucil)?

You should not take psyllium if you have ever had an allergic reaction to it.

Ask a doctor or pharmacist if this medicine is safe to use if you have ever had:

stomach pain, nausea, or vomiting;
trouble swallowing; or
a sudden change in bowel habits lasting longer than 2 weeks.

This medicine may contain sugar, sodium, or phenylalanine. Check the medication label if you have diabetes, high blood pressure, phenylketonuria (PKU), or if you are on a low-salt diet.

Ask a doctor before using this medicine if you are pregnant or breastfeeding. Your dose needs may be different during pregnancy or while you are nursing.

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

Side Effects

What are the side effects of Psyllium (Metamucil)?

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using psyllium and call your doctor at once if you have:

constipation that lasts longer than 7 days;
rectal bleeding; or
severe stomach pain.

Common side effects may include:

bloating; or
minor change in your bowel habits.

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.

Dosage Guidelines & Tips

How to take Psyllium (Metamucil)?

Use Psyllium (Metamucil) 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.

Use exactly as directed on the label, or as prescribed by your doctor.

Laxatives may be habit-forming if they are used too often or for too long.

Psyllium can swell in your throat and cause choking if you don't take it with enough liquid. Drink plenty of fluids each day to help improve bowel regularity.

Take psyllium with a full glass (at least 8 ounces) of water or other liquid.

Swallow psyllium capsules one at a time.

Psyllium powder must be mixed with liquid before you take it. Do not swallow the dry powder. Mix with at least 8 ounces of liquid such as water or fruit juice. Stir and drink this mixture right away. Add a little more water to the glass, swirl gently and drink right away.

Psyllium usually produces a bowel movement within 12 to 72 hours.

Do not take psyllium for longer than 7 days in a row without a doctor's advice. Using a laxative too often or for too long may cause severe medical problems with your intestines.

Call your doctor if your symptoms do not improve, or if they get worse.

Psyllium may be only part of a complete program of treatment that also includes diet, exercise, and weight control. Follow your doctor's instructions very closely.

Store at room temperature away from moisture and heat. Keep the container tightly closed when not in use.

What should I do if I missed a dose of Psyllium (Metamucil)?

Since psyllium is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.