- Temporary bruising, swelling, or redness at the injection site
- Allergic reactions, such as itching or rash
- Infection at the injection site
- Headache or flu-like symptoms
- Temporary eyelid droop
- Facial pain, redness or swelling
- Muscle weakness near treated areas
- Nausea
- Unintended paralysis of nearby muscles
- Unsatisfactory results