They can also provide advice on how to live a healthy lifestyle, perform health and wellness exams, administer vaccinations, and supervise medications given to their patients. In addition, a pharmacist must pay particular attention to the prescription he fills and gives to his patients. They must ensure that the prescription will not interact negatively with other medications the patient is taking, or with any past or previous health conditions the patient has. Then, they will explain to the patient how and when to take the prescribed medication, potential side effects, and answer any additional questions the patient may have. In addition to processing prescriptions, pharmacists will fill out insurance forms and communicate with insurance companies to ensure patients get the medications they need. Finally, pharmacists will supervise the work of their pharmacy technicians and any interns. A prescription can be filled by a pharmacy technician, but must be verified by the pharmacist before being given to a patient. Pharmacists' tasks may also vary depending on where they practice. For example, clinical pharmacists working in hospitals or clinical settings will spend less time dispensing prescriptions and more time completing rotations, overseeing patient medication dosing and scheduling, and performing medical tests. On the other hand,