The New York Times:
Scattered reports suggest that a growing number of pharmacists around the country are refusing to fill prescriptions for contraceptives or morning-after birth control pills because of moral or religious objections. Although the refusals are cast as important matters of conscience for self-described "pro-life" pharmacists, they have the pernicious effect of delaying, and sometimes even denying, a woman's access to medications that may be urgently needed. This is an intolerable abuse of power by pharmacists who have no business forcing their own moral or ethical views onto customers who may not share them. Any pharmacist who cannot dispense medicines lawfully prescribed by a doctor should find another line of work.
Yes. That's right. The pharmacist's role is not to make moral judgments on behalf of her customers. If she believes she'll be made the agent of injustice by continuing in her job as a pharmacist, she is under no obligation to keep doing it.
UPDATE: Don Herzog's thoughts on the matter.