Question 1

Who makes guaifenesin + dextromethorphan?

Accepted Answer

Guaifenesin + Dextromethorphan is a fixed-dose combination of Guaifenesin and Dextromethorphan. There is no combination-level drug master file; it is sourced as a finished combination or built from its component APIs. Its component-API makers are listed below; each holds its own regulatory filing.

Question 2

Where do the APIs in guaifenesin + dextromethorphan come from?

Accepted Answer

Guaifenesin: 9 verified API manufacturers. Dextromethorphan: 20 verified API manufacturers. Each links to its own ranked supplier page.

Question 3

What strengths does guaifenesin + dextromethorphan come in?

Accepted Answer

Common marketed ratios include 15/200, 15/100, 20/400, 60/1, 5/50 (mg per component). Ratios come from the finished-product records as at 29 July 2026.

Guaifenesin + Dextromethorphan FDC suppliers and manufacturers

Component APIs — where each ingredient comes from

Guaifenesin API manufacturers

Dextromethorphan API manufacturers

Source this combination

Component molecule pages