On October 6, California Governor Edmund “Jerry” Brown signed into law SB 671, which permits pharmacists to substitute an interchangeable biosimilar in place of its reference product, provided the pharmacist communicates the substitution to the physician within five days time so that an accurate patient record is maintained, and the physician has not indicated “do not substitute” on the prescription. In a letter dated September 3rd,, ASBM urged Governor Brown, who had previously vetoed a similar bill, to support SB 671.