<<Disclaimer: Verify this information before applying it to your situation.>> I have more than enough trustworthy information now to post my summary. Whey definitely has lactose in it -- a lot of it. -vance <<Definitely- whey:milk:::serum:plasma- still has the sugars in it. <<Lactose is soluble in water, so the majority would be in the whey not the curds. (Lactose is a fairly simple sugar). <<I work at milk processing company and have been given the following information; Whey is about 80-90% of the volume of milk it contains soluable protein,lactose , vitamins and minerals. Lactose is the main constituent of whey. ------------------------------------------------------ I don't know the key to success, but the key to failure is trying to please everybody. -- Bill Cosby