Lidocaine
Lidocaine is a local anesthetic of the amide class. It works by blocking sodium channels, preventing the initiation and transmission of nerve impulses, which results in a temporary loss of sensation in the targeted area.
Dosage by Body Weight
Dosage varies significantly based on the route of administration, the procedure, and patient characteristics. For topical use, apply a thin layer to the affected area up to 3 to 4 times daily. For local infiltration, dosage is calculated strictly based on body weight to avoid systemic toxicity.
- Body Weight
- Below 5 kg
- Dose
- Maximum 3 mg/kg
- Frequency
- Single dose per procedure
- Tracking Notes
- High risk of systemic toxicity in neonates and infants. Use minimal effective volume.
- Body Weight
- 5-7 kg
- Dose
- Maximum 15-21 mg
- Frequency
- Single dose per procedure
- Tracking Notes
- Equivalent to approx. 1.5-2.1 mL of 1% lidocaine. Monitor for cardiac and CNS side effects.
- Body Weight
- 8-10 kg
- Dose
- Maximum 24-30 mg
- Frequency
- Single dose per procedure
- Tracking Notes
- Equivalent to approx. 2.4-3.0 mL of 1% lidocaine.
- Body Weight
- 11-15 kg
- Dose
- Maximum 33-45 mg
- Frequency
- Single dose per procedure
- Tracking Notes
- Equivalent to approx. 3.3-4.5 mL of 1% lidocaine.
- Body Weight
- 16-20 kg
- Dose
- Maximum 48-60 mg
- Frequency
- Single dose per procedure
- Tracking Notes
- Equivalent to approx. 4.8-6.0 mL of 1% lidocaine.
| Body Weight | Dose | Frequency | Tracking Notes |
|---|---|---|---|
| Below 5 kg | Maximum 3 mg/kg | Single dose per procedure | High risk of systemic toxicity in neonates and infants. Use minimal effective volume. |
| 5-7 kg | Maximum 15-21 mg | Single dose per procedure | Equivalent to approx. 1.5-2.1 mL of 1% lidocaine. Monitor for cardiac and CNS side effects. |
| 8-10 kg | Maximum 24-30 mg | Single dose per procedure | Equivalent to approx. 2.4-3.0 mL of 1% lidocaine. |
| 11-15 kg | Maximum 33-45 mg | Single dose per procedure | Equivalent to approx. 3.3-4.5 mL of 1% lidocaine. |
| 16-20 kg | Maximum 48-60 mg | Single dose per procedure | Equivalent to approx. 4.8-6.0 mL of 1% lidocaine. |
Formulation
Purpose
Local anesthetic used to numb tissue in a specific area, relieve localized pain, and treat ventricular arrhythmias intravenously.
Generic Name
LidocaineBranded Drug Names
Lidocaine is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:
Scheduled Drug
No. This medicine is generally not treated as a scheduled/prescription-only drug in common consumer references, but local rules may vary.