Improved Sleep Quality

Supplement	Research Paper	Effect Type	Effect Size
Bifidobacterium breve Bb-03	10.3920/BM2020.0105	Beneficial	Moderate
Bifidobacterium breve BBr60	10.3920/BM2020.0105	Beneficial	Moderate
Bifidobacterium breve Bbr8	10.3920/BM2020.0105	Beneficial	Moderate
Lactobacillus brevis Lbr-35	10.3920/BM2015.0118	Beneficial	Small
Lactobacillus brevis LB01	10.3920/BM2015.0118	Beneficial	Small
Lactobacillus brevis VPro 18	10.3920/BM2015.0118	Beneficial	Small
Lactobacillus brevis KABP™-052	10.3920/BM2015.0118	Beneficial	Small
Lactobacillus plantarum R1012	10.3390/nu13082820	Beneficial	Moderate
Lactobacillus gasseri	10.3390/nu11081859	Beneficial	Large
Lactobacillus gasseri KS-13	10.3390/nu11081859	Beneficial	Large
Lactobacillus gasseri SD-5585	10.3390/nu11081859	Beneficial	Large
Lactobacillus gasseri UALg-05	10.3390/nu11081859	Beneficial	Large
Lactobacillus gasseri LBV 150N	10.3390/nu11081859	Beneficial	Large
Lactobacillus gasseri LG-36	10.3390/nu11081859	Beneficial	Large
Lactobacillus gasseri LAC-343	10.3390/nu11081859	Beneficial	Large
Lactobacillus gasseri LQ-36	10.3390/nu11081859	Beneficial	Large
Lactobacillus casei Lc-11	10.3920/BM2016.0150	Beneficial	Moderate
Lactobacillus casei LC03	10.3920/BM2016.0150	Beneficial	Moderate
Lactobacillus helveticus Rosell-52	10.3920/BM2022.0048	Neutral	Small
Lactobacillus helveticus VPro 13	10.3920/BM2022.0048	Neutral	Small
Bifidobacterium plantarum	10.3390/ijms26168099	Beneficial	Moderate
Bifidobacterium plantarum	10.1038/s41522-025-00872-x	Beneficial	Small
Lactobacillus brevis SBC8803	10.3920/bm2015.0118	Beneficial	Small
Lactobacillus brevis SBC8803	10.3390/life16010026	Beneficial	Small
Lactobacillus brevis SBC8803	10.3390/ijms252313208	Beneficial	Moderate
Lactobacillus brevis SBC8803	10.1016/j.jare.2025.07.005	Beneficial	Moderate
Lactobacillus brevis SBC8803	10.3390/clockssleep5040050	Beneficial	Moderate
Lactobacillus brevis SBC8803	10.3177/jnsv.65.164	Beneficial	Moderate
Lactobacillus brevis SBC8803	10.1038/s41598-021-95659-3	Beneficial	Moderate
Lactobacillus brevis SBC8803	10.3390/nu11102409	Beneficial	Moderate
Lactobacillus brevis SBC8803	10.3390/nu16111702	Beneficial	Moderate
Lactobacillus brevis SBC8803	10.3389/fnbeh.2016.00240	Beneficial	Moderate
Saccharomyces cerevisiae fermentate	10.1038/s41575-021-00440-6	Beneficial	Small
Bifidobacterium breve Bb-18	10.3389/fmicb.2026.1804560	Beneficial	Small