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Benzoic acid / hyoscyamine / methenamine / methylene blue / phenyl salicylate Side Effects

Applies to benzoic acid/hyoscyamine/methenamine/methylene blue/phenyl salicylate: oral tablet

Genitourinary

Frequency not reported: Blue to blue-green discoloration of the urine, difficult micturition, acute urinary retention[Ref]

Cardiovascular

Frequency not reported: Tachycardia, flushing[Ref]

Dermatologic

Rare (less than 0.1%): Itching, rash, swelling[Ref]

Gastrointestinal

Frequency not reported: Blue to blue-green discoloration of stools, dry mouth, nausea, vomiting[Ref]

Nervous system

Frequency not reported: Dizziness, drowsiness[Ref]

Hypersensitivity

Rare (less than 0.1%): Allergic reaction (i.e., itching, rash, severe dizziness, swelling, trouble breathing)[Ref]

Respiratory

Rare (less than 0.1%): Dyspnea[Ref]

Ocular

Frequency not reported: Blurred vision[Ref]

References

1. "Product Information. Hyophen (benzoic acid/hyoscy/methen/mblue/phenylsal)." BioComp Pharma, San Antonio, TX.

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.

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