Master Supplements and their enzyme division US Enzymes have a tremendous variety of specialty probiotics and enzymes, and make sure you check out everything they have. I have used their products for many years in my practice, and I have gotten excellent results that include improved digestion and reduction of GI Health Concerns.

The professional-strength TheralacPRO is a good selection for any natural health practice and I have personally used it for many years with great success, and it compliments the TruBifidoPRO nicely.