Lactic acid producing bacteria (such as Bacillus coagulans) probiotics demonstrate immunomodulating and anti inflammatory effects and the ability to lessen the symptoms of arthritis in humans.

Bacillus Coagulans: A Viable Adjunct Therapy For Relieving Symptoms Of Rheumatoid Arthritis According To A Randomised, Controlled Trial. BMC Complementary and Alternative Medicine 2010, 10:1. David R Mandel, Katy Eichas, Judith Holmes.

The results of this pilot study suggest that adjunctive treatment with Bacillus coagulans probiotic appeared to be safe and effective for patients suffering from Rheumatoid Arthritis. The trial results showed that Bacillus coagulans improved pain symptoms and increased mobility in subjects with Rheumatoid Arthritis.