Because of religion, not pharmacology.
And the old whore? Certainly you jest! And you are the one who said the old whore should be able to make a decision that the pharmacist should be bound to obey.
No. The patient (not whore - who she sleeps with is none of your damned business) and the physician chose a course of treatment. The pharmacist has no say in that course of business.
BTW, pharmacists make decisions all the time (for a variety of reasons) about whether or not you are going to get a drug.
They aren't just window clerks ~ they are professionals who have knowledge of pharmacology ~ and it's usually vastly superior to that of any mere sawbones eh!