IV 5,000-10,000 IU every 4 hr or 500 IU/kg daily as continuous infusion.
SC Initially 250 IU/kg every 12 hr.
Patient undergoing major elective surgery 5,000 IU 2 hr pre-op & then every 8-12 hr post-op for 10-14 days.
Following MI 5,000 IU bd for 10 days.
Other patient 5,000 IU every 8-12 hr.
Prophylaxis during pregnancy 5,000 IU every 12 hr in early pregnancy, may be increased to 10,000 IU every 12 hr in last trimester.