I had diarrhea problems for a few years that no doctor diagnosed. I found on my own that taking a probiotic twice a day completely fixed it, within a few days.

I had diarrhea problems for a few years that no doctor diagnosed. I found on my own that taking a probiotic twice a day completely fixed it, within a few days. The probiotic (Amazon's most popular) was around $13 for 30 pills, so it was going to be $25/mo. That worked, but instead of spending $25/mo, I started making yogurt and using a couple of opened probiotic capsules as the starter. I'm also recently lactose intolerant, so I let the yogurt ferment 24 hours to ensure all the milk sugar is consumed by the bacteria. I strain it to make Greek yogurt, which to me isn't as tart and tastes more like sour cream. 2 probiotic capsules and a half gallon of milk costs less than $4 for 2 quarts of yogurt. I only have to eat a spoonful in the morning before breakfast. Works great! If these lactase-producing probiotics actually do work and are safe, making yogurt with them might be an easy and cheap way to get the same benefits. Edit: corrected the price to $25/mo