Psyllium husk (Metamucil®) induced perennial asthma: A case report.

A S Marwaha, D Cockcroft, B Philipenko

Abstract readCase Reports

In one paragraph

Article in Respiratory medicine case reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it

0cells of the map it votes in

1citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

From Husks and Seeds to Health: an Inevitable Outcome Rather than a Fluke.Current nutrition reports · 2026
Review

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

A S MarwahaInternal Medicine, University of Saskatchewan, Canada.

D CockcroftDivision of Respirology, Critical Care and Sleep Medicine, Department of Medicine, University of Saskatchewan, Canada.

B PhilipenkoDivision of Respirology, Critical Care and Sleep Medicine, Department of Medicine, University of Saskatchewan, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metamucil®, a soluble fiber supplement for constipation, triggered new onset asthma symptoms in a 44-year-old sensitised nurse after a single inhaled exposure. After the initial event, she had no further exposures. She continued to face challenges with exacerbations, poor asthma control, and chronic cough. Despite 30 years of clinic follow-up, her asthma remained difficult to manage, requiring chronic prednisone. While tapering off corticosteroids, she developed polymyalgia rheumatica. This case underscores that psyllium in Metamucil® can cause reactions ranging from mild to severe, even with a single inhaled exposure, emphasising the need for caution in those without a history of asthma.

Indexed as

AllergyLong-term corticosteroidsMetamucil®Occupational riskPsyllium huskSevere asthma

Identifiers

PMID39398877

DOI10.1016/j.rmcr.2024.102110

PMCPMC11470624

What OpenQuestion holds

Textmetadata

LicenceCC BY-NC-ND

Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.