Hydrocodone/guaifenesin

Hydrocodone/guaifenesin, sold under the brand name Obredon among others, is a fixed-dose combination medication used for the treatment of cough. It contains hydrocodone, as the bitartrate, an opioid agonist; and guaifenesin, an expectorant. It is taken by mouth.

Hydrocodone/guaifenesin was approved for medical use in the United States in 2014.

Adverse effects
In the US, the label for hydrocodone/guaifenesin contains a black box warning about addiction, abuse, and misuse.