LEUCOVORIN CALCIUM INJECTION Label - Food and Drug … AF 33767 Format: 102923 # 124C Flat: 8.0” x 15.0” Folded: 5.0” x 1.0” PMS Black 11/09/11 LEUCOVORIN CALCIUM INJECTION USP LCV-PAS-P03 LEUCOVORIN CALCIUM FOR INJECTION Rx ONLY DESCRIPTION Leucovorin is one of several active, chemically reduced derivatives of folic acid. It is useful as an antidote to drugs which act as folic acid