Lidocaine
Also sold as: Xylocaine
Prescription neededLocal anaesthetics
Comes as:InjectionGelOintment
Usual adult dose
Injection: given only by a doctor or dentist to numb an area before stitches or a procedure; the dose depends on body weight. Gel or ointment (2% to 5%): apply a thin layer to the painful area up to three or four times a day.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- brief burning or stinging
- numbness
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- dizziness
- ringing in the ears
- metallic taste
- seizures or slow heartbeat (too much medicine)
- severe allergic reaction
Do not take it, or take care, if
- Allergy to local anaesthetics
- Heart block (injection)
- Severe liver disease (use with caution)
- Do not use large amounts of gel on broken skin or in young children
Interactions
Medicines that can react with this one.
Moderate2 medicinesTake together only with care. Ask your doctor or pharmacist.
- Amiodarone
Amiodarone can raise lidocaine levels and add to effects on heart rhythm.
- Propranolol
Propranolol can raise lidocaine levels and the risk of toxicity.