Safely Buy Mandelamine ( Methenamine Mandelate ) from Canada Prescriptions Plus.

Indications

Methenamine is used to prevent or control returning urinary tract infections caused by certain bacteria. It is not used to treat an active infection.

Antibiotics must be used first to treat and cure the infection. Methenamine is a drug that stops the growth of bacteria in urine. This medication also contains an ingredient that helps to make the urine acidic.

When the urine is acidic, methenamine turns into formaldehyde to kill the bacteria. This drug is effective only against bacterial infections in the urinary tract. It will not work for other types of bacterial infections (such as in the blood) or viral infections (such as the common cold or flu).

Use and Dosage

Take this medication by mouth as directed by your doctor. Dosage is based on the brand of methenamine you are prescribed your medical condition, and your response to treatment. For children, dosage is also based on age and weight.

Methenamine works better if your urine is more acidic. Your doctor may test the acidity of your urine (urine pH). If necessary, your doctor may recommend ways to increase urine acidity (such as by taking vitamin C/drinking cranberry juice, limiting foods that decrease acidity/increase alkalinity such as milk products/most fruits, and adjusting alkalinizing medications).

For the best effect, take this drug at evenly spaced times. To help you remember, take this medication at the same time(s) every day.

Keep taking this medication for the full-time prescribed, even if you feel well. Skipping doses or stopping the medication too early may allow bacteria to continue to grow, which may result in a return of the infection and make the bacteria more difficult to treat (resistant). Do not take more of this drug than directed because it may increase your chance of side effects.

Side Effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Serious side effects include:

• Increased urination
• Painful urination
• Blood in your urine
• Swelling or shortness of breath

Common side effects of methenamine may include:

• Painful urination
• Nausea or vomiting
• Rash or itching

This is not a complete list of side effects and others may occur. 

Cautions

• Before taking methenamine, tell your doctor or pharmacist if you are allergic to it; or to formaldehyde; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
• Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney problems, liver problems, and dehydration.
• Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
• During pregnancy, this medication should be used only when needed. Discuss the risks and benefits with your doctor.
• This drug passes into breast milk and the effect on a nursing infant is unknown. Consult your doctor before breast-feeding.

Form and Strengths

Mandelamine is available in the following forms and strengths:

• Mandelamine Tablet:
  • 500 mg

FAQ

What happens if I miss a dose?

Take the medicine as soon as you can but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

What happens if I overdose?

Seek emergency medical attention.

What should I avoid while taking methenamine?

Avoid taking extra methenamine, or you could have side effects such as bladder irritation, pain, increased urination, and blood in the urine.

Resources:

1. https://www.drugs.com/mtm/methenamine.html#side-effects
2. https://www.webmd.com/drugs/2/drug-5658/mandelamine-oral/details
3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1823254/