What are the vitamins recommended for a better immune system?

There is no specific vitamin or supplement that has been proven to boost the immune system. However, maintaining a healthy lifestyle by consuming plenty of fruits and vegetables, getting enough sleep, managing stress, and practicing good sinus hygiene can help support a strong immune system. It is also recommended to use a saline solution for sinus hygiene to prevent build-up of secretions. Taking these measures can help improve overall immune function and general well-being.