Perflutren and Symmetrel

• Generic Name: perflutren
• Dosage Forms: n.a.
• Other Brand Names: Definity, Optison

Perflutren is an ultrasound contrast agent that is used to improve the quality of an echocardiogram (ultrasound of the heart). Perflutren works by changing the way ultrasound waves travel within your heart. This helps the ultrasound portray a sharper image of your heart.

Perflutren is used to allow certain segments of the heart to be seen more clearly on an echocardiogram.

Perflutren may also be used for purposes not listed in this medication guide.

• Generic Name: amantadine
• Dosage Forms: Tablets and Syrup
• Other Brand Names: Gocovri, Osmolex ER, Symmetrel

Amantadine is an antiviral medicine. It is used to prevent or treat certain influenza (flu) infections (type A). It may be given alone or together with flu shots. Amantadine will not work for colds, other types of flu, or other virus infections.

Amantadine is also an antidyskinetic medicine. It is used to treat Parkinson's disease (sometimes called "paralysis agitans" or "shaking palsy") and its symptoms, including dyskinesia (sudden uncontrolled movements). It may be given alone or in combination with other medicines (eg, levodopa) for Parkinson's disease. By improving muscle control and reducing stiffness, this medicine allows more normal movements of the body as the disease symptoms are reduced. Amantadine is also used to treat stiffness and shakiness caused by certain medicines that are used to treat nervous, mental, and emotional conditions.

This medicine is available only with your doctor's prescription.