Add a little less than a half-teaspoon each of ginger powder, fennel seeds and cinnamon along with a pinch of clove powder to a cup of hot water. Let the mix steep for 10 minutes, then strain before drinking. Grapefruit is a good source of immunity-boosting vitamin C, but it also is an excellent detoxifier for the liver. Garlic is another excellent builder-upper of your immune system. You might want to continue taking garlic supplements afterwards to keep your system strong.
Hot baths are excellent for stimulating circulation and breaking up congestion.
Fill the tub with comfortably hot water and submerge as much of yourself as possible. Soak for 15 minutes. Dry off then get into a warm bed for at least one hour, keeping your limbs covered. Repeat this process two to three times daily. Fresh pineapple juice is a yummy way to give your body the vitamin C it needs, and it helps to break up mucus.