Dysport® Safety + Side Effects
Common side effects
It’s important to find a primary physician, dermatologist, cosmetic aesthetician, plastic surgeon or other healthcare professional who is trained and licensed to administer Dysport. Galderma provides comprehensive training for all qualified HCPs who want to inject our aesthetic products.
When it comes to possible side effects, you may be wondering why Dysport has a boxed warning. In 2009, following a comprehensive safety review, the FDA mandated that all botulinum toxins — including Dysport and other competitive products on the market — carry a boxed warning to bring attention to the fact that these products have the potential to spread from the injection site to other parts of the body, resulting in serious risks, including difficulty talking, swallowing or breathing; muscle weakness; drooping eyelids; and blurred or double vision.
However, the most common possible side effects include:
- dry mouth
- injection site discomfort or pain
- injection site skin reaction
- neck pain
- muscle pain
- nose and throat irritation
- upper respiratory tract infection
- sinus inflammation
- eye problems: double vision, blurred vision, decreased eyesight, problems with focusing the eyes (accommodation), drooping eyelids, swelling of the eyelids
- allergic reactions. Symptoms of an allergic reaction to Dysport may include itching; rash; red, itchy welts; wheezing; asthma symptoms; or dizziness or feeling faint. Tell your doctor or get medical help right away if you get wheezing or asthma symptoms, or if you get dizzy or faint
Other side effects
Dysport may cause serious side effects that can be life threatening, including:
- Problems breathing or swallowing — People who already have swallowing or breathing problems before receiving Dysport have the highest risk of getting these problems. These problems can happen within hours, or days to weeks after an injection of Dysport, usually because the muscles used to breathe and swallow can become weak after the injection. Death can happen as a complication if you have severe problems with swallowing or breathing after treatment with Dysport.
- People with certain breathing problems may need to use muscles in their neck to help them breathe. These patients may be at greater risk for serious breathing problems with Dysport.
- Swallowing problems may last for several weeks. People who can not swallow well may need a feeding tube to receive food and water. If swallowing problems are severe, food or liquids may go into your lungs.
- Spread of toxin effects — In some cases, the effect of botulinum toxin may affect areas of the body away from the injection site and cause symptoms of a serious condition called botulism. The symptoms of botulism include:
- loss of strength and muscle weakness all over the body
- double vision
- blurred vision and drooping eyelids
- hoarseness or change or loss of voice (dysphonia)
- trouble saying words clearly (dysarthria)
- loss of bladder control
- trouble breathing
- trouble swallowing