Antioxidants are substances that protect cells from oxidation caused by free radicals. Oxidation is a natural process that can cause damage to cells and, when left unchecked, can lead to a variety of health problems. Free radicals are molecules that have become unstable due to a missing electron. Because of this instability, free radicals can cause damage to cells by stealing electrons from other molecules. Antioxidants are able to neutralize free radicals by donating electrons to them, thus preventing them from causing damage to cells. Antioxidants have many health benefits, including the prevention of cancer and cardiovascular disease, as well as protection from a variety of other illnesses. They can also slow down the aging process by helping to protect cells from oxidative damage. Antioxidants are found in a variety of foods, including fruits and vegetables, as well as in certain supplements.
Joshanda, a polyherbal Unani (Greco-arab) formulation comprising seven herbs is extensively used in the treatment of upper and lower respiratory catarrh. The word “Joshanda” is derived from two words i.e. "Joshanidan” which means boiling and “Andah” which means “prepared by” thus Joshanda meaning, “prepared by boiling” (Vohora, 1986). Decoction of Joshanda mixture is prepared extemporaneously by boiling it for a substantial length of time.