I'm as lactose intolerant as you can get. Seriously ... it's bad. I haven't touched milk in 16 years. Recently, I decided to gain some weight, so I ordered some lactase drops from amazon. I put about 45 drops in a gallon and stick it in the fridge for 2 days. The stuff is amazing - not even a hint of stomach discomfort. I'm drinking about a 1/2 gallon a day and the weight is slowly and steadily increasing. Try it.