First step towards better anti viral immune system can be EASY and FREE. Get some Sun daily while doing some light exercises; keep your home airy and bring in lots of natural light, sunlight is good to produce Vitamin D for your body; which is anti-viral. Get lots of rest vegetables and fresh citrus; try the fresh Malaysian Calamansi which is high in anti oxidant and vitamins. For those interested, call Daniel at 016 5723876  Get more sun for better health:
https://www.healthline.com/…/getting-more-sun-could-protect…