How much is too much? My grandfather keeps telling me to take 2 vitamin C tablets in addition to my "One A Day" vitamin. I take "One A Day - Energy" which includes 60mg (100% of the daily value of vitamin C). The tablets he wants me to take are "Nature Made" brand vitamin C and are 1000mg (1,667% of the daily value of vitamin C) each. Since I am a smoker he believes I should be taking my 1 "One A Day" and 2 of the "Nature Made" tables together totaling 2060 mg (3434% of the daily value). So I guess what I want to know is if he is right and is it safe? Is this too much "C" or just enough?