| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Sabre Sciences, Inc. | Scandinavian Formulas | Seroyal Genestra | |
| Seroyal Pharmax | Seroyal Unda | Shankara, Inc. | SmartyPants Vitamins |
| Sombra | Source Naturals | Sovereign Silver | Suki Skincare |
| Sun Chlorella USA | Standard Process | ||
| Theramedix | Thorne Research | Trace Minerals Research |
| Transformation Enzyme | True Botanica |
| Verified Quality | Vetri-Science Laboratories | Vet- Zimes | Vinco |
| Vital Nutrients | Vitanica |
| Wakunaga | Weleda Body Care | World Nutrition |
| Xlear | Xymogen |
| ZyCal Bioceuticals |
