Yes, milk and cheese are often good sources of calcium, potassium and sodium. That’s one of the reasons why I include certain types of cheeses as part of my dietary framework. Occasionally, I also have a cup of camel milk with a meal.  However, note that any dairy product energy (calories) that will break your fast — and milk, in particular — might kick you out of ketosis if you overindulge in it.  As a result, I don’t consider dairy a viable alternative for an electrolyte supplement that I would sip during workouts or throughout the day.