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
Frequency not reported: Blue to blue-green discoloration of the urine, difficult micturition, acute urinary retention[Ref]
Frequency not reported: Tachycardia, flushing[Ref]
Rare (less than 0.1%): Itching, rash, swelling[Ref]
Frequency not reported: Blue to blue-green discoloration of stools, dry mouth, nausea, vomiting[Ref]
Frequency not reported: Dizziness, drowsiness[Ref]
Rare (less than 0.1%): Allergic reaction (i.e., itching, rash, severe dizziness, swelling, trouble breathing)[Ref]
Rare (less than 0.1%): Dyspnea[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 of Methylphen may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
More about Methylphen (benzoic acid / hyoscyamine / methenamine / methylene blue / phenyl salicylate)
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- Drug class: urinary antispasmodics
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