Are you tired of getting frequent urinary tract infections? The symptoms of urinary tract infection, frequent urination, and lower abdominal pain can make it difficult to do your daily activities. Sometimes, your doctor can prescribe a special medication to help prevent these infections from recurring. Today, we are talking about one such medication, Methenamine Hippurate.
What is this Methenamine?
Simply put, Methenamine is a medication that is given to prevent bacterial infections from developing in your urinary tract. The important thing to understand here is that this is not a treatment for an existing, worsening infection. That is, it is used to stop the infection from occurring, not to cure an existing infection.
Think of it like taking an umbrella before it rains. An umbrella helps to prevent you from getting wet in the rain. But an umbrella doesn't do much good when you're really wet. Similarly, if you already have a urinary tract infection and its symptoms are severe, this medicine won't work. At that time, the doctor will give you a different antibiotic.
Also, this medicine does not work at all for viral illnesses like colds and flu. It is specifically designed to prevent bacterial infections of the urinary tract only.
Things you need to tell your doctor before taking medicine
Before starting methenamine, it is very important to give your doctor a complete description of your health condition. Be sure to mention the following in particular:
- If you have any kidney disease .
- If you have any liver disease .
- If your body is dehydrated , that means the amount of water in your body has decreased significantly .
- If you have allergies to methenamine, certain artificial food colorings (for example , tartrazine dye ), other medications, or foods.
- If you are pregnant, trying to get pregnant , or breastfeeding.
Based on this information, the doctor will decide whether this medication is suitable for you or not.
How to use the medicine correctly?
To get the most out of a medicine, you need to use it as directed.
- Take this pill with a full glass of water .
- Take the medicine exactly as prescribed by the doctor, at the right time.
- Most importantly: Do not crush, chew, or crush the tablet. Swallow the tablet whole.
- Take the medicine for the full duration prescribed by your doctor. Do not stop taking the medicine even if you feel better now.
- If this medicine is given to children, it should only be done on the advice of a pediatrician. It is usually given to children over 6 years of age under certain circumstances, but be sure to talk to your doctor about it.
What if I accidentally take too much medicine?
If you think you have taken more than you think, don't panic. Immediately call the National Poisons Information Centre at the Colombo National Hospital . Or, go to the Emergency Treatment Unit (ETU) of the nearest hospital.
This medicine has been prescribed for you only. Do not share your medicine with anyone else for any reason.
The most important thing to be careful about when taking medicine!
Here's the most important thing to know about Methenamine. For this drug to work in your body, your urine must be acidic.
Simply put, the acidity of the urine needs to increase. That's when the drug Methenamine turns into a chemical (formaldehyde) that can kill bacteria. If your urine isn't acidic, taking this drug won't do anything.
Therefore, your doctor will tell you about a special diet that will help acidify your urine.
- How much water should you drink per day?
- What foods help acidify urine? (e.g. foods rich in vitamin C, some fruits)
- What foods make urine alkaline, meaning what to avoid? (e.g. certain vegetables, dairy foods, antacids)
Please ask your doctor about this clearly.
Other things that may interact with this medicine
Methenamine is a drug that can interact with some other medications, so tell your doctor about all the medications you are taking.
| Type of medicine | What to know |
|---|---|
| Sulfa drugs | Do not take Methenamine with these. Taking these two together may reduce the effectiveness of Methenamine. |
| Antacids | Liquids/tablets for gastritis. These make the urine alkaline, which reduces the effectiveness of Methenamine. |
| Drugs like Acetazolamide, Methazolamide, Sodium Bicarbonate | Since these also affect the acidity of urine, you should tell your doctor if you are taking these. |
What are the possible side effects?
Like any medicine, Methenamine can cause side effects in some people.
| Side effect | What to do |
|---|---|
| If you experience these symptoms, tell your doctor immediately. | |
| Allergic reactions (skin rash, itching, swelling of lips/tongue/face) | Seek medical advice immediately. |
| Bladder pain or inflammation | Inform the doctor. |
| Dark-colored urine | Inform the doctor. |
| Lower abdominal or back pain | Inform the doctor. |
| Painful or frequent urination | Inform the doctor. |
| If these symptoms persist, tell your doctor. | |
| Diarrhea | If it persists, tell your doctor. |
| Appetite | If it persists, tell your doctor. |
| Mouth sores | If it persists, tell your doctor. |
| Nausea and stomach discomfort | If it persists, tell your doctor. |
Take-Home Message
- Methenamine is a medicine given to prevent urinary tract infections, not to treat an existing infection.
- For this medicine to work, your urine must be acidic . To do this, follow the diet instructions given by your doctor exactly.
- Swallow the tablet whole with water , without chewing or crushing it .
- Tell your doctor about all other medications you are taking, especially sulfa drugs and antacids .
- If you experience any serious side effects such as skin rash, facial swelling, or urinary tract infection, seek medical advice immediately.
- This medicine is for you only. Do not share it with anyone else.
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