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Prosed/DS

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

Medically reviewed by Drugs.com. Last updated on Sep 1, 2020.

Uses of Prosed/DS:

  • 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 Prosed/DS?

  • If you are allergic to Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine); any part of Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine); or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
  • If you have any of these health problems: Bowel block, glaucoma, myasthenia gravis, slow moving GI (gastrointestinal) tract, or trouble passing urine.
  • If you have ever had heart failure (weak heart) or other heart problems.
  • 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 Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine). Talk with your doctor if you are not sure.

This is not a list of all drugs or health problems that interact with Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine).

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 Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine) 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 Prosed/DS?

  • Tell all of your health care providers that you take Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine). 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 Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine) with care. You could have more side effects.
  • Use with care in children. Talk with the doctor.
  • Do not give Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine) to a child younger than 6 years of age.
  • Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.

How is this medicine (Prosed/DS) best taken?

Use Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine) 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 before or 1 hour after taking Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine).
  • If you also take ketoconazole, take it at least 2 hours before you take Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine).
  • Drink lots of noncaffeine liquids unless told to drink less liquid by your doctor.

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.

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, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Shortness of breath.
  • Trouble passing urine.
  • A fast heartbeat.
  • Blurred eyesight.
  • Dizziness or passing out.
  • A severe and sometimes deadly problem called serotonin syndrome may happen if you take Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine) with 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; severe diarrhea, upset stomach, or throwing up; or severe headache.

What are some other side effects of Prosed/DS?

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.
  • 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 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

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 Prosed/DS?

  • Store at room temperature protected 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.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.

Consumer information use

  • 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.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Prosed/DS (methenamine, phenyl salicylate, methylene blue, benzoic acid, hyoscyamine), 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.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

More about Prosed DS (benzoic acid / hyoscyamine / methenamine / methylene blue / phenyl salicylate)

Consumer resources

Other brands: Hyophen, Urised, Urophen MB

Professional resources

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