Clinical drug
guaifenesin 400 MG Oral Tablet [Bidex]
400 MG · Oral Tablet · oral
A form of guaifenesin →
guaifenesin 400 MG Oral Tablet [Bidex] — Expectorants. Strength, form, class, interactions & more.
![guaifenesin 400 MG Oral Tablet [Bidex]](https://dailymed.nlm.nih.gov/dailymed/image.cfm?setid=41f4f8df-87d4-459f-af6d-3a4356a8115b&name=guaifenesin-er-tabs-8637-1.jpg)
Active ingredient
Classification
ExpectorantsExpectorant
Drug interactions
Guaifenesin should not be used with monoamine oxidase inhibitors (MAOIs).
- majormonoamine oxidase inhibitors (MAOIs) — potentially serious interactions
Warnings
WARNINGS Do not use for children under 12 years of age
Source: RxNorm + openFDA + RxClass + FAERS · 2026
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