PrabotulinumtoxinA-xvfs Injection

PrabotulinumtoxinA-xvfs injection may spread from the area of injection and cause symptoms of botulism, including severe or life-threatening difficulty breathing or swallowing. People who develop difficulty swallowing during their treatment with this medication may continue to have this difficulty for several months. They may need to be fed through a feeding tube to avoid getting food or drink into their lungs. Tell your doctor if you have or have ever had swallowing problems, or breathing problems, such as asthma or emphysema; or any condition that affects muscles or nerves such as amyotrophic lateral sclerosis (ALS, Lou Gehrig’s disease; condition in which the nerves that control muscle movement slowly die, causing the muscles to shrink and weaken), myasthenia gravis (condition that causes certain muscles to weaken, especially after activity), or Lambert-Eaton syndrome (condition that causes muscle weakness that may improve with activity).

Spread of prabotulinumtoxinA-xvfs into untreated areas can cause other symptoms in addition to difficulty breathing or swallowing. Symptoms may occur within hours of an injection or as late as several weeks after treatment. If you experience any of the following symptoms, call your doctor immediately or get emergency medical treatment: loss of strength or muscle weakness all over the body; double or blurred vision; drooping eyelids or brow; difficulty swallowing or breathing; or difficulty speaking or saying words clearly.

Your doctor or pharmacist will give you the manufacturer’s patient information sheet (Medication Guide) when you begin treatment with prabotulinumtoxinA-xvfs injection and each time you refill your prescription. Read the information carefully and ask your doctor or pharmacist if you have any questions. You can also visit the Food and Drug Administration (FDA) website ( or the manufacturer’s website to obtain the Medication Guide.

🔔 Why is this medication prescribed?

PrabotulinumtoxinA-xvfs injection is used to temporarily smooth frown lines (wrinkles between the eyebrows) in adults. It is in a class of medications called neurotoxins. It works by blocking the nerve signals that cause uncontrollable tightening and movement of the muscles.

🔔 How should this medicine be used?

PrabotulinumtoxinA-xvfs injection comes as a powder to be mixed with a liquid to be injected into the muscle by a doctor. You may receive additional injections, not more often than every 3 months, depending on how long the effects of the treatment last.

Your doctor will select your dose of prabotulinumtoxinA-xvfs injection based on your condition and later may change it to find the dose that will work best for you.

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One brand or type of botulinum toxin cannot be substituted for another.

PrabotulinumtoxinA-xvfs injection may help control your condition but will not cure it. It may take a few days or up to several weeks before you feel the full benefit of prabotulinumtoxinA-xvfs injection. Ask your doctor when you can expect to see improvement, and call your doctor if your symptoms do not improve during the expected time.

🔔 Other uses for this medicine

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.