What Pharmacists Do. Pharmacists dispense prescription medications to patients and offer expertise in the safe use of prescriptions. They also may provide advice on how to lead a healthy lifestyle, conduct health and wellness screenings, provide immunizations, and oversee the medications given to patients.ommunity pharmacists work in retail stores such as chain drug stores or independently owned pharmacies. They dispense medications to patients and answer any questions that patients may have about prescriptions, over-the-counter medications, or any health concerns that the patient may have.