Skip to main content

Ryna-12X Side Effects

Generic name: guaifenesin / phenylephrine / pyrilamine

Note: This document contains side effect information about guaifenesin / phenylephrine / pyrilamine. Some dosage forms listed on this page may not apply to the brand name Ryna-12X.

Applies to guaifenesin/phenylephrine/pyrilamine: oral suspension, oral tablet.

Nervous system

Nervous system side effects have included nervousness, restlessness, headache, drowsiness, and sedation.[Ref]


Gastrointestinal side effects have included nausea and vomiting.[Ref]


Dermatologic side effects have included rash, in addition to urticaria.[Ref]


General side effects have included dryness of mucous membranes.[Ref]


1. "Product Information. Ryna-12X (guaifenesin / phenylephrine / pyrilamine)." Meda AB (2003):

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.