Drug Reference
Methenamine
Other antibacterials
OTC
Fact box
- Therapeutic class
- Other antibacterials
- Habit forming
- No
- Availability
- Over-the-counter (OTC)
Brand names
Azo Urinary Tract DefenseCystexHiprexHyophenPhosphasalProsed DSUrelleUretron DSUrexUribelUribel TabsUrimar Reformulated Oct 2013Urin DSUro-BlueUrogesic Blue Reformulated Apr 2012Uroqid-Acid No.2UstellUtira
Available as
100 MG/ML · Oral Suspension1000 MG · Oral Capsule9 MG · Oral Tablet0.12 MG · Oral Tablet0.12 MG · Oral Capsule162 MG · Oral Tablet100 MG/ML · Oral Solution500 MG · Oral Tablet1000 MG · Oral Tablet
FDA label sections are from openFDA and may not reflect the most recent labeling — confirm against the current DailyMed label.
Uses
Uses Temporarily relieves: pain & burning • frequency and urgency of urination
How to use / dosing
Directions: Adults and children 12 years and over: take 2 tablets with a full glass of water 3 times a day. Drink plenty of fluids. Children under 12 years: ask a doctor
Safety advice
Conservative summary derived from FDA labeling — defaults to “consult your doctor” unless the label is explicit. Not a substitute for your clinician’s advice.
PregnancyConsult your doctor
…ringing in the ears or a loss of hearing occurs If pregnant or breast feeding, ask a health professional before use.
BreastfeedingNo information
No specific information in the FDA label. Check LactMed →
AlcoholConsult your doctor
…have 3 or more alcoholic drinks every day while using this product •…
DrivingNo information
No specific information in the FDA label.
KidneyConsult your doctor
…kidney disease •…
LiverConsult your doctor
…liver cirrhosis •…
Warnings & precautions
Warnings Reye's syndrome: Children and teenagers who have or are recovering from chicken pox or flu-like symptoms should not use this product. If changes in behaviour with nausea and vomiting occur, consult a doctor because these symptoms could be an early sign of Reye's syndrome, a rare but serious illness. Stomach bleeding warning: This product contains an NSAID, which may cause stomach bleeding. The chance is higher if you: • take other drugs containing prescription or nonprescription NSAIDs (aspirin, ibuprofen, naproxen or others) • have 3 or more alcoholic drinks every day while using this product • have stomach ulcers or bleeding problems • take a blood thinning (anticoagulant) or steroid drug • are age 60 or older • take more or for a longer time than directed Do not use: • if you are on a sodium restricted diet • if you are allergic to salicylates (including aspirin) unless directed by a doctor • if you have stomach problems (such as heartburn, upset stomach, or stomach pain) that persist or recur, or if you have ulcers or bleeding problems unless directed by a doctor Ask a doctor before use if you have • frequent, burning urination for the first time • the stomach bleeding warning applying to you • history of stomach problems, such as heartburn • high blood pressure • heart disease • liver cirrhosis • bleeding problems • diuretic use • ulcers • kidney disease • reached age 60 or older Ask a doctor or pharmacist before use if you are • taking any other drug containing an NSAID (prescription or nonprescription) • taking a blood thinning (anticoagulant), steroid, diabetes, gout or arthritis drug When using this product • do not take more than the recommended dosage Stop and ask a doctor if • product has been used for 3 days • you experience any of the following signs of stomach bleeding: • feel faint, vomit blood • have bloody or black stools • have stomach pain that does not get better • ringing in the ears or a loss of hearing occurs If pregnant or breast feeding, ask a health professional before use.
Current FDA labels (DailyMed)
- METHENAMINE MANDELATE TABLET, FILM COATED [BRYANT RANCH PREPACK]
- METHENAMINE MANDELATE TABLET, FILM COATED [BRYANT RANCH PREPACK]
- METHENAMINE HIPPURATE TABLET [NORTHSTAR RX LLC]
- METHENAMINE MANDELATE SOLUTION [ONCORA PHARMA, LLC]
- UTI EMERGENCY RELIEF (METHENAMINE, SODIUM SALICYLATE, AND PHENAZOPYRIDINE HYDROCHLORIDE KIT) KIT [CADENCE HEALTH, INC.]
Authoritative sources
Reference only — not clinical advice. Verify against current FDA labeling and consult a licensed provider. About half of pediatric drug use is off-label and is not reflected in FDA labels; absence of pediatric information does not mean a medicine is unused or unsafe in children.