As I made my trip to the grocery store to refill my allergy medication, I learned some interesting information. Standing in the allergy relief isle in Sprouts Farmers Market, trying to decide whether to keep buying my current herbal pills, the vitamin specialist told me that I can use them for at least six months. Afterward, I need to consider switching to something else. When you take medication daily, the ingredients accumulate in your body and as we know too much of a good thing can hurt. The same philosophy applies to probiotics, because your system can benefit from the diverse strains as their types differ in various brands.