Increased Serum Free Thyroxine Levels
| Supplement | Research Paper | Effect Type | Effect Size |
|---|---|---|---|
| SYNBIO | 10.1371/journal.pone.0277213 | Beneficial | Small |
| Bifidobacterium bifidum HA-132 | 10.1007/s12602-019-09613-x | Beneficial | Moderate |
| Bifidobacterium bifidum VPro 51 | 10.1007/s12602-019-09613-x | Beneficial | Moderate |