Lactose in enough quantities gets my tummy rumbling in a bad way so I’m trying out alternatives.
Oat milk in hipster coffee drinks is pretty good.
Soy milk as a protein and calcium beverage is fine. Tastes OK.
There is lactose-free milk too but that is still suspect. Either it’s not all the way lactose free or too much of any kind of dairy quakes my intestines.
If you end up liking oat milk you should try making it yourself. It’s ridiculously cheap and easy. It doesn’t last nearly as long without the preservatives of store bought, but you can stagger making small batches to match your usage if needed.