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Perflutren Lipid Microspheres

Generic name: Perflutren Lipid Microspheres [ per-FLOO-tren-LIPid-MI-kro-SFIRS ]
Brand name: Definity
Drug class: Ultrasound contrast media

Medically reviewed by Last updated on Apr 28, 2024.


  • Very bad heart or lung problems have rarely happened during or after infusion of this medicine (perflutren lipid microspheres). Sometimes these have been deadly. Most bad reactions happen within 30 minutes of the infusion. Talk with the doctor.

Uses of Perflutren Lipid Microspheres:

What do I need to tell my doctor BEFORE I take Perflutren Lipid Microspheres?

This medicine may interact with other drugs or health problems.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine (perflutren lipid microspheres) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Perflutren Lipid Microspheres?

How is this medicine (Perflutren Lipid Microspheres) best taken?

Use this medicine (perflutren lipid microspheres) as ordered by your doctor. Read all information given to you. Follow all instructions closely.

What do I do if I miss a dose?

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

What are some other side effects of Perflutren Lipid Microspheres?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if you have any side effects that bother you or do not go away.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Perflutren Lipid Microspheres?

Consumer Information Use and Disclaimer

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.