MetamucilandMiralaxare bothover-the-counter (OTC) medicinesused to treatconstipation.

However, Metamucil and Miralax work differently and have different side effects and safety profiles.

The following is a comparison of these medications.

Miralax bottle

Smith Collection / Gado / Getty Images

Smith Collection / Gado / Getty Images

What Is Metamucil?

Metamucil is a fiber laxative.

The active ingredient is calledpsylliumhusk powder.

Its primary use is to relieve occasionalconstipation(irregularity).

What Is Miralax?

Miralax is classified as anosmotic laxative.

The active ingredient is calledpolyethylene glycol(PEG) 3350.

Some healthcare providers recommend Miralax as abowel-cleansingagent before a procedure like acolonoscopy.

It comes in a powder form; the powder is mixed with liquids, and the individual drinks it.

Some of these children received an adult dose of PEG (17 grams) for an extended period.

Is Metamucil or Miralax More Effective?

Both OTC medications can be effective at treating constipation.

The medications have not been studied directly against each other in clinical trials.

Check with your healthcare provider for medical advice on whether Metamucil or Miralax would be more appropriate for you.

What Are Some Advantages of Metamucil vs. Miralax?

Call your healthcare provider if you have unusual problems while taking one of these medications.

Precautions

Precautions for Metamucil or Miralax medications should be considered.

Therefore, take Metamucil at least two hours before or after any other oral medications.

Miralax

Miralax may affect how other medicines are absorbed.

Therefore, take Miralax at least one hour before or after any other oral medications.

Summary

Metamucil and Miralax are over-the-counter medications used to relieve constipation.

Metamucil is a bulk-forming laxative that contains psyllium, a soluble fiber.

Miralax is an osmotic laxative that contains polyethylene glycol.

Frequently Asked Questions

Probably not.

Metamucil and Miralax have several differences.

For example, Metamucil is available in many dosage forms.

It is a bulk-forming laxative that contains a fiber called psyllium.

Miralax is a powder that can be dissolved in any beverage.

It’s an osmotic laxative that contains polyethylene glycol.

Although they both treat constipation, Metamucil and Miralax are not the same.

They are different types of laxatives, work differently, and have different safety profiles.

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