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Demser

Metyrosine

METYROSINE lowers the amount of epinephrine and norepinephrine that the body makes. It is used to treat pheochromocytoma. Compare catecholamine synthesis inhibitors.
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Demser Side Effects

What should I watch for?

Visit your doctor or healthcare professional for regular check ups.

After you stop taking this medicine you may have trouble sleeping for a few days.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

Drink several glasses of water a day. This will help to lower your risk of kidney problems.

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Common and Rare Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

More common

Diarrhea

drooling

trembling and shaking of hands and fingers

trouble in speaking

Less common

Anxiety

confusion

hallucinations (seeing, hearing, or feeling things that are not there)

mental depression

Rare

Black, tarry stools

blood in urine or stools

unusual bleeding or bruising

muscle spasms, especially of neck and back

painful urination

pinpoint red spots on skin

restlessness

shortness of breath

shuffling walk

skin rash and itching

swelling of feet or lower legs

tic-like (jerky) movements of head, face, mouth, and neck

unusual tiredness or weakness

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Drowsiness

Less common

Decreased sexual ability in men

dryness of mouth

nausea, vomiting, or stomach pain

stuffy nose

swelling of breasts or unusual milk production

After you stop using this medicine, it may still produce some side effects that need attention. During this period of time, check with your doctor immediately if you notice the following side effects:

More common

Diarrhea

Also, after you stop taking this medicine, you may have feelings of increased energy or you may have trouble sleeping. However, these effects should last only for two or three days.

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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