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Drug interactions between Metamucil and Metamucil MultiHealth Fiber Sugar-free

Results for the following 2 drugs:
Metamucil (psyllium)
Metamucil MultiHealth Fiber Sugar-free (psyllium)

Interactions between your drugs

There were no interactions found in our database between Metamucil and Metamucil MultiHealth Fiber Sugar-free - however, this does not necessarily mean no interactions exist. Always consult with your doctor or pharmacist.


A total of 41 drugs are known to interact with Metamucil.

Metamucil MultiHealth Fiber Sugar-free

A total of 41 drugs are known to interact with Metamucil MultiHealth Fiber Sugar-free.

Drug and food interactions


psyllium food

Applies to: Metamucil (psyllium) and Metamucil MultiHealth Fiber Sugar-free (psyllium)

Psyllium may interact with other medications if given at the same time. This can cause your other medications to become less effective. In general, all oral medications should be administered at least 2 hours before or 2 hours after dosing of psyllium. Take psyllium with a full glass (at least 8 ounces) of cool water or another liquid. Taking psyllium without enough liquid may cause it to swell in the throat and cause choking.

Switch to professional interaction data

Therapeutic duplication warnings

Therapeutic duplication is the use of more than one medicine from the same drug category or therapeutic class to treat the same condition. This can be intentional in cases where drugs with similar actions are used together for demonstrated therapeutic benefit. It can also be unintentional in cases where a patient has been treated by more than one doctor, or had prescriptions filled at more than one pharmacy, and can have potentially adverse consequences.


Bulk laxatives

Therapeutic duplication

The recommended maximum number of medicines in the 'bulk laxatives' category to be taken concurrently is usually one. Your list includes two medicines belonging to the 'bulk laxatives' category:

  • Metamucil (psyllium)
  • Metamucil MultiHealth Fiber Sugar-free (psyllium)

Note: The benefits of taking this combination of medicines may outweigh any risks associated with therapeutic duplication. This information does not take the place of talking to your doctor. Always check with your healthcare provider to determine if any adjustments to your medications are needed.

Drug Interaction Classification

The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.