A pharmacist is a highly-trained healthcare professional who specializes in the preparation and distribution of medications. They are the experts who provide advice to patients and physicians about the safe and effective use of drugs. Pharmacists have extensive knowledge of the composition and use of medications, and are responsible for ensuring the accuracy and quality of prescriptions. They also advise patients on health-related issues such as drug interactions, side effects, and dosage. Pharmacists play a critical role in improving patient care and outcomes, and they are an essential part of the healthcare system.