For one half gallon of milk, add 16 to 20 drops of Lactaid for 100 percent lactose reduction. Lactaid cannot be used in buttermilk as it is too acid. Your individual tolerance for this lactose-reduced milk will vary. Most people with lactose intolerance can drink one-half to two cups of lactose reduced milk daily. You will notice that lactose reduced milk is somewhat sweeter than regular milk because glucose has a greater sweetening power than the lactose naturally found in milk.
Skim milk has more salt than whole or two- percent milk.
My doctor told me to follow a low salt diet. I like skim milk and need to lose some weight. Skim milk contains 7 milligrams more sodium than whole or two percent milk which is not a significant difference. Since you are overweight , skim milk is better for you to drink. This amounts to approximately one and one-half teaspoons of butter or 90 calories.