Is it healthy to take lactose (enzyme) pills daily?

It's fine to do: Lactase (the enzyme that breaks down lactose milk sugar) is something that all mammals have, because we are born milk-drinkers. As time goes by (it is genetic, familial) many people make less and less lactase, so can't digest lactose. Presuming the lactase pills have good purity, it should be fine to use every day, because it is just replacing something we naturally had in our bodies.