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Hyophen

Generic Name: Methenamine, Phenyl Salicylate, Methylene Blue, Benzoic Acid, & Hyoscyamine (meth EN a meen, fen nil sa LIS i late, METH i leen bloo, ben ZOE ik AS id & hye oh SYE a meen)
Brand Name: Hyophen, Prosed/DS, Urophen MB

Uses of Hyophen:

  • It is used to ease pain from a bladder infection.
  • It is used to treat muscle spasms of the urinary system.

What do I need to tell my doctor BEFORE I take Hyophen?

  • If you have an allergy to methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine, or any other part of Hyophen (methenamine, phenyl salicylate, methylene blue, benzoic acid, & hyoscyamine).
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you are taking or have recently taken any drugs for mental or mood problems like depression. There are many drugs that must not be taken with this medicine. Talk with your doctor if you are not sure.

This is not a list of all drugs or health problems that interact with Hyophen.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Hyophen?

  • Tell all of your health care providers that you take Hyophen. This includes your doctors, nurses, pharmacists, and dentists.
  • You may need to check the acid content (pH) of your urine using a dipstick test.
  • If you are 65 or older, use this medicine with care. You could have more side effects.
  • Use with care in children. Talk with the doctor.
  • Do not give Hyophen to a child younger than 6 years of age.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this medicine while you are pregnant.
  • Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.

How is this medicine (Hyophen) best taken?

Use Hyophen as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • Take with or without food.
  • Do not take antacids within 1 hour of this medicine.
  • If you also take ketoconazole, take it at least 2 hours before you take Hyophen.
  • Drink lots of noncaffeine liquids unless told to drink less liquid by your doctor.
  • To gain the most benefit, do not miss doses.
  • Keep taking this medicine as you have been told by your doctor or other health care provider, even if you feel well.

What do I do if I miss a dose?

  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.

See also: Dosage Information (in more detail)

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Shortness of breath.
  • Not able to pass urine.
  • A fast heartbeat.
  • Blurred eyesight.
  • Very bad dizziness or passing out.
  • A very bad and sometimes deadly health problem called serotonin syndrome may happen if you take Hyophen with drugs for depression, migraines, or certain other drugs. Call your doctor right away if you have agitation; change in balance; confusion; hallucinations; fever; fast or abnormal heartbeat; flushing; muscle twitching or stiffness; seizures; shivering or shaking; sweating a lot; very bad diarrhea, upset stomach, or throwing up; or very bad headache.

What are some other side effects of Hyophen?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Upset stomach or throwing up.
  • Dry mouth.
  • Change in color of urine or stool to blue or green.
  • Flushing.
  • Dizziness.
  • Feeling sleepy.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.

See also: Side effects (in more detail)

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Hyophen?

  • Store at room temperature.
  • Protect from light.
  • Store in a dry place. Do not store in a bathroom.
  • Keep lid tightly closed.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

Consumer Information Use and Disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about this medicine, please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

This information should not be used to decide whether or not to take Hyophen (methenamine, phenyl salicylate, methylene blue, benzoic acid, & hyoscyamine) or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Hyophen. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Review Date: October 4, 2017

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