Adult 1 tab tds or 1 amp IM or IV 3 times wkly.
Inj Peripheral neuropathies 1 amp administered IM or IV 3 times wkly.
Megaloblastic anemia 1 amp administered IM or IV 3 times wkly. After approx 2 mth of medication, the dose should be reduced to a single administration of 1 amp at 1- to 3-mth intervals for maintenance therapy.