Methylphen Side Effects
Generic Name: benzoic acid / hyoscyamine / methenamine / methylene blue / phenyl salicylate
Note: This document contains side effect information about benzoic acid / hyoscyamine / methenamine / methylene blue / phenyl salicylate. Some of the dosage forms listed on this page may not apply to the brand name Methylphen.
Applies to benzoic acid/hyoscyamine/methenamine/methylene blue/phenyl salicylate: oral tablet
Rare (less than 0.1%): Itching, rash, swelling[Ref]
Rare (less than 0.1%): Allergic reaction (i.e., itching, rash, severe dizziness, swelling, trouble breathing)[Ref]
Frequency not reported: Blurred vision[Ref]
1. "Product Information. Hyophen (benzoic acid/hyoscy/methen/mblue/phenylsal)." BioComp Pharma, San Antonio, TX.
Some side effects may not be reported. You may report them to the FDA.