A pharmacist is a healthcare professional who is responsible for preparing, dispensing and monitoring medications to ensure optimal patient safety and health outcomes. They have extensive knowledge about the properties and effects of drugs, as well as their interactions with other medications or substances. Pharmacists work in various settings such as hospitals, community pharmacies, long-term care facilities, and clinics, among others. Their primary role is to ensure that patients receive the correct medication at the right dose and frequency, while also providing counseling on proper medication use, monitoring for side effects or interactions, and educating patients about their health conditions.