Wasted on the Way Lyrics. Look around me. I can see my life before me. Running rings around the way. It used to be. I am older now. I have more than what I wanted. But I wish that I had started.
The short answer is yes.. A pharmacist may refuse to fill a prescription if they feel it is illegal, medically inappropriate, or you are drug seeking (see the previous, fairly comprehensive answer for details of the statute and regulations).
If your doctor instructs you to take a prescription medicine as needed, pay particular attention to expiration dates, but get the date from the manufacturer (say, two years from purchase), not from the pharmacist. In many states, pharmacies are permitted to write their own, earlier expiration dates on medicines.