10+ Year Member
5+ Year Member
Feb 7, 2006
Dental Student
Hello guys,
i just had a quick question what is the formula to see how much lidocaine can be given to a person??? sorry i just have forgot the exact formula and been having a difficult time? appreciate your answer!!!!!


10+ Year Member
Jul 18, 2004
San Francisco
This is from the package insert:

Adults: For normal healthy adults, the individual maximum recommended dose of Lidocaine HCl with epinephrine should not exceed 7 mg/kg (3.5 mg/lb) of body weight, and in general it is recommended that the maximum total dose not exceed 500 mg. When used without epinephrine the maximum individual dose should not exceed 4.5 mg/kg (2 mg/lb) of body weight, and in general it is recommended that the maximum total dose does not exceed 300 mg. For continuous epidural or caudal anesthesia, the maximum recommended dosage should not be administered at intervals of less than 90 minutes. When continuous lumbar or caudal epidural anesthesia is used for nonobstetrical procedures, more drug may be administered if required to produce adequate anesthesia.

The maximum recommended dose per 90 minute period of Lidocaine hydrochloride for paracervical block in obstetrical patients and nonobstetrical patients is 200 mg total. One half of the total dose is usually administered to each side. Inject slowly, five minutes between sides. (See also discussion of paracervical block in PRECAUTIONS.)

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 over 3 years of age who have a normal lean body mass and normal body development, the maximum dose is determined by the child’s age and weight. For example, in a child of 5 years weighing 50 lbs, the dose of Lidocaine HCl should not exceed 75 mg to 100 mg (1.5 mg/lb to 2 mg/lb).