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Osmolex ER
AMANTADINE is used to treat Parkinson's disease and other movement disorders. Compare anticholinergics.
Prescription Settings
brand
tablet
129mg
90 tablets
Osmolex ER(brand)
tablet
129mg
90 tablets
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Osmolex ER Side Effects

What should I watch for?

Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.

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. If you find that you have sudden feelings of wanting to sleep during normal activities, like cooking, watching television, or while driving or riding in a car, you should contact your health care professional.

There have been reports of increased sexual urges or other strong urges such as gambling while taking this medicine. If you experience any of these urges while taking this medicine, you should report it to your health care provider as soon as possible.

Patients and their families should watch out for new or worsening depression, thoughts of suicide or suicidal behavior, seeing or hearing things that aren't real (hallucinations), or other changes in behavior or thinking during treatment with this medicine. If you experience any of these changes while taking this medicine, contact your health care provider right away.

This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.

The tablet shell for some brands of this medicine does not dissolve. This is normal. The tablet shell may appear whole in the stool. This is not a cause for concern.

You should check your skin often for changes to moles and new growths while taking this medicine. Call your doctor if you notice any of these changes.

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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 immediately if any of the following side effects occur:

More common

Bladder pain

bloody or cloudy urine

blurred vision

confusion

difficult, burning, or painful urination

dizziness or lightheadedness

fainting

falls

frequent urge to urinate

lower back or side pain

seeing, hearing, or feeling things that are not there

swelling of the hands, feet, or lower legs

Less common

Inability to move the eyes

increased blinking or spasms of the eyelid

muscle spasm

sticking out of the tongue

troubled breathing, speaking, or swallowing

uncontrolled twisting movements of the neck, trunk, arms, or legs

unusual facial expressions

Rare

Chills

decreased vision or any change in vision

difficulty in coordination

fever

increased blood pressure

increase in body movements

irritation and swelling of the eye

loss of memory

mental depression

seizures

severe mood or mental changes

skin rash

slurred speech

sore throat

thoughts of suicide or attempts at suicide

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

Agitation

anxiety

difficulty concentrating

headache

irritability

loss of appetite

nausea

nervousness

nightmares

purplish red, net-like, or blotchy spots on the skin

trouble with sleeping

Less common

Constipation

decrease in sexual desire

diarrhea

drowsiness

dryness of the mouth, nose, and throat

false sense of well-being

unusual tiredness or weakness

vomiting

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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