Is there any cure for lactose intolerance?

Yes. Avoid dairy products. Of all mammals, only humans consume milk in adulthood. The ability to properly absorb lactose decreases over time. Lactaid may be of some benefit but it is best to just avoid dairy if it bothers you.
Lactose issues. While lactose intolerance may be transient following a GI infection, for many people it is an ongoing issue for which there is no cure. Good news is that it is fairly easy to treat with lactose free milk or acidophilus products. Also, most people are able to identify the threshold for having symptoms and may be able to tolerate small amounts of dairy.