Lactobacillus casei (or l.casei for short) is one strain of bacteria you want to make sure is in your probiotic supplement.

This strain of bacteria lives in your mouth and gastrointestinal tract, much like many other bacteria.

L.casei will help boost your immunity and aids in digestion. Besides the (last strain I talked about [link]), this strain is also commonly found in probiotics, and if your probiotic does not have it, you might want to think twice about taking it.

Like most other probiotics, you want to make sure you are taking at least 100 million CFU’s of it at the bare minimum.

Due to the harsh environment of your stomach, many of the bacteria will die before they have enough time to take hold in your gut.

By taking at least 100 million CFU’s, you can ensure that enough bacteria will survive and make it to your gut to fight the bad guys.

Personally, I’d look for a supplement with at least 1 billion CFU’s.

Just in case you don’t like supplements, you can also find l.casei in yogurt, milk, and some fermented products.