Lemon and ginger is a classic combo when served hot with tea and honey. Strange as it might sound, it’s even more effective at fighting infections if you toss the lemon peel into the juicer along with its tart flesh; the essential oils and antioxidant-containing pigments help take the lemon’s vitamin C to a whole new level.
Ginger is a natural inflammation fighter and decongestant. If you really want an iron wall to keep the sniffles at bay, chase your juice with a spoonful of minced raw garlic, a noted (and pungent!) disease-fighter.