[Do the health benefits you mentioned about tea and coffee] apply to instant [varieties]?
— Corey Clark
Via the blog
To a certain extent.
Freshly brewed teas and coffees have higher amount of antioxidants and polyphenols, but instant varieties still deliver their share.
Keep in mind that products like General Foods International Coffees (pictured at left) are coffee drinks mixes — NOT instant coffees.
These products contain more sugar, hydrogenated oils, and artificial flavors than they do coffee!