How can i treat lactose intolerance?

2 choices: You treat this issue by #1 avoiding all products with lactose or #2 take supplemental lactase enzyme (lactaid and others).There are milk products available that have the enzyme added and there are milk substitutes (almond ; soy) that contain no lactose. Some milk based products (cheddar cheese ; yogurt) that are low enough in lactose content that they don't trigger symptoms.