Final answer:
Pharmacists are responsible for dispensing prescription drugs, patient counseling, and advising on drug interactions, requiring a doctorate in pharmacy and knowledge of both chemistry and biology.
Step-by-step explanation:
Functions performed exclusively by a pharmacist (or pharmacy intern under the direct supervision of a pharmacist) vary depending on regulations. However, overwhelmingly they include the dispensing of prescription medications, conducting patient counseling for the use of these drugs, advising on potential drug interactions, and managing medication therapy. Pharmacists play a crucial role in the healthcare system, working in settings such as drugstores, hospitals, and other medical facilities. With a firm knowledge of chemistry and biology, they help guide both physicians and patients to ensure medications are used safely and effectively. This expertise, gathered through credit hours of specialized education including a doctorate in pharmacy, is what enables pharmacists to carry out these responsibilities that go beyond the reach of other healthcare workers.