Methenamine

Uses of Methenamine

Methenamine is commonly used to treat Bacterial Infections Of Urinary Tract, Urinary Tract Infections Utis

How Methenamine Works

Methenamine works as antibacterial agents by converting into formaldehyde in the acidic urine which kills off both gram-positive and gram-negative bacteria.

Side Effects of Methenamine

Painful urinating, Nausea, Vomiting, Diarrhea, Stomach discomfort, Rash, Itchiness

Information About Methenamine

Methenamine is a urinary antiseptic used to prevent recurrent urinary tract infections in patients with chronic bacteriuria in Singapore. Available as a 500mg–1000mg oral tablet taken four times daily with an acidifying agent, it is HSA-registered and available on prescription only in Singapore. It acts as a prodrug that releases formaldehyde under acidic urinary conditions — adequate urinary acidification with vitamin C or cranberry is necessary as methenamine is ineffective in alkaline urine. A valid doctor's consultation is required before dispensing. Order Methenamine online at DoctorOnCall Singapore with same-day delivery available. Speak to a DoctorOnCall physician today to check if Methenamine is right for you.

Warnings

Kidney High Risk

Methenamine is contraindicated to be used in patients with renal impairment.

Alcohol Safe

There is no clear contraindication on the consumption of alcohol when taking Methenamine.

Pregnancy Not Safe

Limited animal reproductive studies have not shown any adverse effects or fetal toxicity. Methenamine should be used with caution in pregnancy due to some of Methenamine that can cross the placenta.

Driving Generally Safe

Methenamine can be used before driving as it does not show to affect the ability and concentration to drive.

Liver Safe If Prescribed

Dosage adjustment may be needed for patients with mild to moderate hepatic impairment and is contraindicated for patients with severe hepatic impairment.

Lactation Safe If Prescribed

The metabolites of Methenamine has been detected in human breastmilk and thus it should be used with caution during breastfeeding.

Frequently Asked Questions

Written by

Dr. Adeline Carol Peters

, Bachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)

Reviewed by

Dr. Mohd Izzat Amir Bin Awang

, Doctor of Medicine (MD), University of Mansoura - Manchester