BY INTRAVENOUS INFUSION (IMPORTANT: MINIMUM FLUID VOLUME, SEE BELOW), INITIALLY 50 MICROGRAMS/MINUTE, INCREASED GRADUALLY ACCORDING TO RESPONSE BY 50 MICROGRAMS/MINUTE EVERY 10 MINUTES UNTIL CONTRACTIONS STOP OR MATERNAL HEART RATE REACHES 140 BEATS PER MINUTE; CONTINUE FOR 12 - 48 HOURS AFTER CONTRACTIONS CEASE (USUAL RATE 150 - 350 MICROGRAMS/MINUTE); MAX. RATE 350 MICROGRAMS/MINUTE; OR BY INTRAMUSCULAR INJECTION, 10 MG EVERY 3 - 8 HOURS CONTINUED FOR 12 - 48 HOURS AFTER CONTRACTIONS HAVE CEASED; THEN BY MOUTH, 10 MG 30 MINUTES BEFORE TERMINATION OF INTRAVENOUS INFUSION, REPEATED EVERY 2 HOURS FOR 24 HOURS, FOLLOWED BY 10 - 20 MG EVERY 4 - 6 HOURS, MAX. ORAL DOSE 120 MG DAILY