This patient reminder system is built using Laravel as the web framework, Twilio Programmable Voice for sending voice calls, and MySQL database management. The application allows users to add new patients with their details such as name, phone number, email, gender, drug name, dosage, and reminder time. When a scheduled time elapses, the system sends a voice call reminder to the patient, reminding them to take their medication. The application also includes features like validation of user input, sending reminders at specific times, and handling errors and exceptions. To deploy the application, users need to set up a MySQL database, install Docker, create a new Laravel project, configure Twilio account details, create the necessary models, controllers, and routes, and finally test the application by accessing it through an ngrok tunnel. The system can be scheduled using cron jobs to automate the reminder calls at specific times.