BY SLOW INTRAVENOUS INJECTION OR INFUSION (WITH BLOOD PRESSURE AND ECG MONITORING), STATUS EPILEPTICUS, 18 MG/KG AT A RATE NOT EXCEEDING 50 MG PER MINUTE, AS A LOADING DOSE (SEE ALSO NOTES ABOVE); MAINTENANCE DOSES OF ABOUT 100 MG SHOULD BE GIVEN THEREAFTER AT INTERVALS OF EVERY 6 - 8 HOURS, MONITORED BY MEASUREMENT OF PLASMA CONCENTRATIONS; RATE AND DOSE REDUCED ACCORDING TO WEIGHT; CHILD 18 MG/KG AS A LOADING DOSE (NEONATE 15 - 20 MG/KG AT RATE OF 1 - 3 MG/KG/MINUTE)
VENTRICULAR ARRHYTHMIAS (BUT USE NOW OBSOLETE), BY INTRAVENOUS INJECTION VIA CAVAL CATHETER, 3.5 - 5 MG/KG AT A RATE NOT EXCEEDING 50 MG/MINUTE, WITH BLOOD PRESSURE AND ECG MONITORING; REPEATED ONCE IF NECESSARY
NOTE TO AVOID LOCAL VENOUS IRRITATION EACH INJECTION OR INFUSION SHOULD BE PRECEDED AND FOLLOWED BY AN INJECTION OF STERILE PHYSIOLOGICAL SALINE THROUGH THE SAME NEEDLE OR CATHETER
BY INTRAMUSCULAR INJECTION, NOT RECOMMENDED
ORAL DOSE:
ADULTS :- 200-300 MG DAILY, INCREASED TO 600 MG IF NECESSARY.
CHILDREN :- 5 MG/KG/DAY IN 2 OR 3 TIMES A DAY.MAX 300 MG DAILY