If your human pharmacist forgets a drug interaction, who's responsible? It's a pretty pedestrian question that doesn't become impossible to solve once you introduce machines. I would assume the company that manufactures the machine would assume liability for errors that result from their negligence.
In fact, I'm pretty certain that the average laptop with Excel is more than powerful enough to outmatch the most skilled human pharmacist when it comes to memorizing and predicting known drug interactions. If anything, you'd expect malpractice insurance rates to skyrocket for human pharmacists compared to automated vending machines -- just as you'd expect car insurance to go up for human-piloted (and error-prone) cars versus their automated counterparts.
In fact, I'm pretty certain that the average laptop with Excel is more than powerful enough to outmatch the most skilled human pharmacist when it comes to memorizing and predicting known drug interactions. If anything, you'd expect malpractice insurance rates to skyrocket for human pharmacists compared to automated vending machines -- just as you'd expect car insurance to go up for human-piloted (and error-prone) cars versus their automated counterparts.