Vitamin E Antioxidant, Neuroprotection Vitamin E is a scavenger of several ROS and serves to reduce their reactivity and toxicity. It offers protection from the propagative damage of ROS by inhibiting the oxidative modifi cation of lipoproteins AD [74-79,82-86] PD [175-177,79] ALS [193,217,218] Vitamin C Antioxidant, Neuroprotection Vitamin C is an excellent antioxidant, suitable in reducing ROS levels, lipid peroxidation, and oxidative stress. It is also useful in regenerating other antioxidants. AD [81,82,75,77,79] PD [166-168] ALS [213,214] Vitamin D Antioxidant Neuroprotection Vitamin D prevent oxidative stress, lower the production of free radicals, and reduce neurotoxicity through the enhancement of autophagy signaling pathways AD [74-78,30,16,80] PD [157-159,169-174] ALS [215,216] Vitamin A Antioxidan Vitamin A prevent the formation of Aβ plaques AD [16,30,74-78] Vitamin B Antioxidant Neuroprotection Vitamin B perform antioxidant and neuroprotective functions AD [88-90] PD [157-159,162-165] HD [105] Curcumin Antioxidant Anti-infl ammatory Neuroprotection Curcumin is a scavenger of free radicals and reduces mitochondrial disfunction. AD [100,101] Omega−3 fatty acids Antioxidant Anti-infl ammatory Omega-3 fatty acids reduce ROS formation acting as free radical scavengers.