Perflutren and Viekira XR

• 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: dasabuvir / ombitasvir / paritaprevir / ritonavir
• Dosage Forms: extended release tablets
• Other Brand Names: Viekira Pak, Viekira XR

Viekira XR (Viekira) is a combination antiviral medicine used to treat chronic hepatitis C virus (HCV) in adults. Viekira is sometimes given in combination with another antiviral medicine called ribavirin.

Viekira treats specific genotypes of hepatitis C, and only in certain people. Use only the medications prescribed for you. Do not share your medicine with other people.

Viekira is sometimes used in people who also have HIV. Viekira XR is not a treatment for HIV or AIDS.

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