Phenylephrine HD Side Effects
Generic name: hydrocodone / phenylephrine
Note: This document contains side effect information about hydrocodone / phenylephrine. Some of the dosage forms listed on this page may not apply to the brand name Phenylephrine HD.
Rare (less than 0.1%): Occasional drowsiness, dizziness, mild mental stimulation
Postmarketing reports: Convulsions[Ref]
Postmarketing reports: Breathing difficulties[Ref]
-Chronic opioid use may affect the hypothalamic-pituitary-gonadal axis leading to androgen deficiency.
-Opioids role in androgen deficiency have not been evaluated where other factors (medical, physical, lifestyle, psychological) have been adequately controlled.
-Perform laboratory evaluation for symptoms of androgen deficiency.[Ref]
Rare (less than 0.1%): Mild mental stimulation
Postmarketing reports: Hallucinations[Ref]
Rare (less than 0.1%): Blurred vision[Ref]
Postmarketing reports: Allergic reaction[Ref]
Rare (less than 0.1%): Dry mouth, gastric irritation[Ref]
More about Phenylephrine HD (hydrocodone / phenylephrine)
Related treatment guides
1. "PDR Generics." Montvale, NJ: Medical Economics (1998):
2. Cerner Multum, Inc. "Canadian Product Information." O 0 (2015):
Some side effects may not be reported. You may report them to the FDA.