Women's Health

Methenamine Oral Tablet (METHENAMINE - ORAL)

For infection prevention.

Brand Name(s): Hiprex, Urex

Generic Name: Methenamine Hippurate

Instructions

This medicine will work best if you take it at about the same time every day.

Store at room temperature away from heat, light, and moisture. Do not keep in the bathroom.

If you forget to take a dose on time, take it as soon as you remember. If it is almost time for the next dose, do not take the missed dose. Return to your normal schedule. Do not take 2 doses at one time.

Drug interactions can change how medicines work or increase risk for side effects. Tell your health care providers about all medicines taken. Include prescription and over-the-counter medicines, vitamins, and herbal medicines. Speak with your doctor or pharmacist before starting or stopping any medicine.

Tell your doctor if symptoms do not get better or if they get worse.

The foods you eat can change how well this medicine works. Tell your doctor about the types of food you normally eat. Ask your doctor for a list of foods that can affect this medicine. Do not significantly change the foods you normally eat while on this medicine.

It is very important that you follow your doctor's instructions for all blood tests.

Do not take the medicine more than twice during 24 hours.

Cautions

Tell your doctor and pharmacist if you ever had an allergic reaction to a medicine.

Do not use the medication any more than instructed.

Tell the doctor or pharmacist if you are pregnant, planning to be pregnant, or breastfeeding.

Do not share this medicine with anyone who has not been prescribed this medicine.

Side Effects

The following is a list of some common side effects from this medicine. Please speak with your doctor about what you should do if you experience these or other side effects.

  • decreased appetite
  • diarrhea
  • nausea and vomiting
  • stomach upset or abdominal pain

If you have any of the following side effects, you may be getting too much medicine. Please contact your doctor to let them know about these side effects.

  • difficulty or discomfort urinating
  • blood in urine

Call your doctor or get medical help right away if you notice any of these more serious side effects:

  • ear problems (ringing in the ears, hearing loss)
  • swelling of the legs, feet, and hands
  • muscle cramps

A few people may have an allergic reaction to this medicine. Symptoms can include difficulty breathing, skin rash, itching, swelling, or severe dizziness. If you notice any of these symptoms, seek medical help quickly.

Please speak with your doctor, nurse, or pharmacist if you have any questions about this medicine.