any1 knw where i can get this ??? Vitamin C sodium salt C6H7NaO6 Sodium Ascorbate Fine Powder USP. i call up toa payoh one pharmacy but 500gram $150 i believe its nt tht x one lahz.. cus US webby only selling $15 http://www.iherb.com/ProductDetails.aspx?p...293197697039798 was thinkin of gettin it since e review not bad in reefcentral