Methionine

Generic Name: methionine (me-THYE-o-neen)
Brand Name: Me-500

Methionine is used for:

Acidifying urine. It may also be used for other conditions as determined by your doctor.

Methionine is an amino acid. It works by neutralizing the ammonia in urine.

Do NOT use methionine if:

  • you are allergic to any ingredient in methionine
  • you have severe liver disease

Contact your doctor or health care provider right away if any of these apply to you.

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Before using methionine:

Some medical conditions may interact with methionine. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances
  • if you have high acid levels in the body tissues or liver problems

Some MEDICINES MAY INTERACT with methionine. However, no specific interactions with methionine are known at this time.

This may not be a complete list of all interactions that may occur. Ask your health care provider if methionine may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use methionine:

Use methionine as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Take methionine with or following a meal.
  • If you have difficulty swallowing the capsules, they may be dissolved in juice, water, or warm milk.
  • If you miss a dose of methionine, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use methionine.

Important safety information:

  • Methionine may cause drowsiness. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to methionine. Using methionine alone, with certain other medicines, or with alcohol may lessen your ability to drive or perform other potentially dangerous tasks.
  • PREGNANCY and BREAST-FEEDING: If you become pregnant while taking methionine, discuss with your doctor the benefits and risks of using methionine during pregnancy. It is unknown if methionine is excreted in breast milk. If you are or will be breast-feeding while you are using methionine, check with your doctor or pharmacist to discuss the risks to your baby.

Possible side effects of methionine:

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Drowsiness; nausea; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue).

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately.

Proper storage of methionine:

Store methionine at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep methionine out of the reach of children and away from pets.

General information:

  • If you have any questions about methionine, please talk with your doctor, pharmacist, or other health care provider.
  • Methionine is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.
  • Check with your pharmacist about how to dispose of unused medicine.

This information should not be used to decide whether or not to take methionine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. 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 methionine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to methionine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using methionine.

Issue Date: December 3, 2014
Database Edition 14.4.1.003
Copyright © 2014 Wolters Kluwer Health, Inc.

Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. 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 this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.

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