Botox may have side effects in some people. All medications have side effects. It is important to notify your health professional if you experience any side effects or are feeling unwell.
When used for muscle spasticity, Botox injections can cause swelling, pain and bruising at the injection site, headaches and flu-like symptoms. Although unlikely, it is possible for the Botox toxin to spread within the body and the doctor will give specific instructions regarding this, along with instructions for the first few days after injection to manage the injection site.
Botox for urinary incontinence has some common side effects including urinary tract infection and urinary retention. Intermittent self-catheterisation may be necessary. Other, less common, side effects include difficulty sleeping, constipation, muscle weakness and spasm, bulge in the bladder wall, tiredness and problems with walking and falls. There may also be side effects directly related to the injection procedure such as blood in the urine after the injection.
Your doctor or pharmacist can provide comprehensive information on the use of Botox, including precautions and side effects.