Sometimes probiotics can help with lactose intolerance. Pick one that has lactobacillus in it. You can also buy lactaid enzymes over the counter which when eaten before you eat lactose will also help you digest and absorb the lactose better.

No, they don't. Lactose intolerance is not related in any way to the intestinal microbiota. It has to do with lack of enzyme lactase in the small intestine.