Each pump of the LidoRx 3% bottle in 30mL Airless Pumps (NDC:35781-0300-3) will deliver 0.25 mL of LidoRx 3% enough to cover a 2 x 2 inch area of skin. A single application should not exceed 10 g of LidoRx 3%, containing 300 mg of Lidocaine Hydrochloride USP; This would equal 40 pumps of the 30mL Airless bottle. In a 70 kg adult this dose equals 4.3 mg/kg (1.9 mg/lb) Lidocaine Hydrochloride USP. No more than one 30mL Airless Pump bottle, approximately 30g of LidoRx 3% or 900 mg Lidocaine Hydrochloride USP, should be administered in any one day. Although the incidence of adverse effects with LidoRx 3% is quite low, caution should be exercised, particularly when employing large amounts, since the incidence of adverse effects is directly proportional to the total dose of local anesthetic agent administered.
Dosage for children:
It is difficult to recommend a maximum dose of any drug for children since this varies as a function of age and weight. For children less than ten years who have a normal lean body mass and a normal lean body development, the maximum dose may be determined by the application of one of the standard pediatric drug formulas (e.g., Clark’s rule). For example a child of five years weighing 50 lbs., the dose of lidocaine should not exceed 75-100 mg when calculated according to Clark’s rule. In any case, the maximum amount of Lidocaine Hydrochloride USP administered should not exceed 4.3 mg/kg (2.0 mg/lb) of body weight.
Administration
Apply a thin film to the affected area two or three times daily not to exceed 12 pumps in twenty four hours (24Hrs). One pump covers an area of 2 x2 inches. Larger areas will require additional applications. Or use as directed by a physician.