Since COVID-19 has cold and flu-like symptoms, Vitamins B, C and D and zinc should be helpful in boosting your immune system and fighting it in the same way they can help you with a cold or the flu.
Vitamin C
Generally, vitamin C can help you get over a cold faster or ease your cold symptoms if you were taking it before getting sick. As an antioxidant, vitamin C can help reduce inflammation, lung inflammation is a severe symptom of COVID-19, leading to respiratory distress.
Food high in C: broccoli, brussels sprouts, spinach, cantaloupe, orange, grapefruit, strawberries.
Vitamin D
The main function of vitamin D is to help your body maintain proper levels of calcium and phosphorous, which you can get through exposure to the sun’s ultraviolet rays, or through supplements and the foods you eat.
Getting the proper does of vitamin D can also protect you from respiratory infections. Vitamin D supplementation has shown to decrease the chance of respiratory tract infections.
Food high in D: salmon, tuna, sardines, fortified cereals/juices, milk, cheese, egg yolks.
B-complex vitamins
Vitamin B6 is essential to maintaining your immune system. Be sure to get enough vitamin B as part of your daily diet .
Food high in B: kidney beans, poultry, meat, milk, eggs, fortified cereals/bread, sunflower seeds.
Zinc
Zinc helps symptoms of nasal congestion, nasal drainage, sore throat, and cough resolve sooner. Zinc has also been found to help produce and activate T-cells (t-lymphocytes), which trigger the body to respond to infections.
Food high in Zinc: meat, shellfish, legumes, dairy, seed/nuts, eggs, whole grains.