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Mb Caps

Generic: Methenamine, Sodium Phosphate, Monobasic, Monohydrate, Phenyl Salicylate, Methylene Blue, And Hyoscyamine Sulfate

Rx only
Antispasmodic✓ FDA-verified
View full FDA label ↗
Mb Caps is a medication used to relieve symptoms like pain and inflammation associated with lower urinary tract infections and other urinary issues. It works by breaking down in acidic urine to release substances that help kill bacteria and reduce discomfort. Adults typically take one capsule four times a day, along with plenty of fluids. It's important not to exceed the recommended dose, and if you experience rapid heartbeat, dizziness, or blurred vision, you should stop taking it right away. This medication is not recommended for children six years old or younger, and those with certain heart conditions should be cautious when using it.
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Uses

  • Symptoms of irritative voiding.
  • Local symptoms from lower urinary tract infections.
  • Urinary tract symptoms from diagnostic procedures.
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Dosage

  • One capsule orally 4 times per day with plenty of fluids.
  • Pediatric dosage must be individualized by a physician.
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Side effects

Common

rapid pulseflushingblurred visiondizzinessdrowsinessshortness of breath

Serious

difficulty urinatingacute urinary retention
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Warnings

⚠ Important warnings

  • Do not exceed the recommended dosage.
  • Stop use if you experience rapid pulse or dizziness.
  • Keep out of reach of children.
  • In case of overdose, seek professional help immediately.
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Drug interactions

  • Methylene bluemay cause serotonin toxicity with psychiatric medicationsCaution
  • Hyoscyaminemay reduce absorption of other oral medicationsCaution
  • Urinary alkalizersreduce effectiveness of methenamineCaution
  • Antacidsmay decrease hyoscyamine absorption.Caution

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Answers pulled from the FDA label only.

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Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).