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Name of the generic: metyrosine metyrosine me-TYE’roe-seen me-TYE-roe
Drug class: Miscellaneous cardiovascular agent

What is Demser?

Demser can be used for treating pheochromocytoma (a tumor that affects the adrenal gland). Demser could also be used to treat conditions that are not mentioned in this guide.

Side effects of Demser

Contact a medical professional immediately. If you are experiencing warning signs of an allergic response, such as hives, difficulty breathing, and swelling of your lips, face, and tongue,

Demser could cause severe adverse reactions. Consult your doctor immediately if you suffer from:

  • Drooling trouble speaking
  • Confusion, hallucinations;
  • Tremors or muscle spasms
  • Uncomfortable or difficult to urinate;
  • The urine appears cloudy or
  • Persistent, severe, chronic, or constant.

Common negative effects of Demser can include:

  • Drowsiness or
  • Involuntary muscle movement

This is not a comprehensive list of possible side effects, and others could happen. Consult your physician to seek medical advice on the effects. You can report any side effects to the FDA at 1-800-FDA-1088.


Follow the directions on your prescription label and the package. Inform your health care providers about your medical ailments and allergies, as well as the medicines you are taking.

Before taking this medication

It is not recommended to apply Demser if you are sensitive to it.

Demser is not a product that has been approved to be used by anyone younger than 12 years old.

Inform your doctor if you have ever suffered from:

  • Kidney stones or other kidney issues;
  • Heart conditions or
  • Liver disease.

Consult your physician if you are breastfeeding or pregnant.

How to take Demser?

Follow the instructions on your prescription label, and go through all medication guides or instructions. The doctor might alter the dosage. Follow the medication precisely as directed.

Consume 6 to 8 full glasses of fluid a day to prevent crystals from developing within your urine.

Demser can alter the results of some tests. Be sure to inform any doctor who treats you that you're taking this medication.

Place it in a cool, dry place free of heat and moisture.

For the first 2 or 3 days after stopping taking Demser, it is possible to experience withdrawal symptoms like problems sleeping or an increased level of alertness.

Do I be concerned if I miss a dose?

Do not take the medicine for as long as you are able, but do not take any missed doses if it's nearing the time to take the next dose. Don't take two doses at a time.

What will happen if I take excessively?

For medical emergencies, seek emergency medical attention or contact for help at the Poison Help Line at 1-800-222-1222.

The signs of an overdose could be anxiety, depression, agitation, dry mouth shaking, diarrhea, tremors, or a tightness of your jaw.

What should be avoided?

Avoid driving and other hazardous activities until you understand the effects of Demser on your The way you react could be impaired.

Consuming alcohol while taking this medication may cause unwanted side effects.

Interaction with other drugs

Utilizing Demser in conjunction with other drugs that cause drowsiness can make this worse. Consult your physician before taking an opioid drug, a sleeping pill, a muscle relaxer, or medication to treat anxiety or seizures.

Inform your doctor about any other medicines you are taking, particularly antipsychotic medicines.

Other medications can impact Demser, like medications that are prescribed and available over the counter, vitamins, and herbal products. Inform your physician about your current medications and any medication you begin or stop taking.