After weaning, our bodies naturally decrease the production of lactase, the enzyme that breaks down lactose in our intestines. In theory, after the age of two humans stop consuming their mother’s milk and therefore no longer have a need for high levels of lactase. The introduction of cow’s milk definitely threw a wrench into our operations. Lactase products such as Lactaid and Dairy-Ease “replace” the lactase in our systems temporarily, aiding in the digestion of lactose. This may sound like an easy solution, but don’t forget to look at the whole picture:

• Keep a Big Budget for Big Stock: Lactase products come in a pill or liquid form. The liquid is added to milk and allowed to sit for 24 hours, in essence “neutralizing” the lactose. The pills are what you take with or just before your first bite of dairy. Typically one to three pills must be taken each time you consume dairy (breakfast, lunch, dinner, snacks, dessert, etc.). These products are not cheap, and the need to take them with great frequency, in a very timely manor, and when away from home, can make for a very inconvenient and costly method.
• They Won't Solve the Problem: Unless it was brought on by an acute illness, lactose intolerance is a life long issue that may progressively worsen over time. This means that you will need to diligently take those pills for the rest of your life, and you may even need to up the dosage from time to time. Beyond the fact that this just doesn’t seem normal, what a pain!
• I Hope You Don't Mind Some Gas: Researchers at Baylor College of Medicine in Houston tested the most popular lactase enzyme products (such as Lactaid, Dairy Ease and Lactrase) for effectiveness. The results showed some relief of abdominal cramping and bloating, but none of the products they tested had any effects on gas. As for the cramping and bloating, the effects on an individual level varied widely, from significant benefit to no help at all.
• They Aren't Just For Milk and Cheese: Let’s say you are diligent about taking the pills, are you just as diligent about reading the labels? Lactose intolerant individuals who do not go dairy free must read labels as frequently as their non-dairy siblings. Lactose hides in ingredients such as whey, and is found in numerous processed foods, marinades, etc.

The Conclusion: Lactase enzymes may help you get through that once a month office pizza party, but are definitely not a good long-term solution.