Materia Medica by Cyrus Maxwell Boger
- Sabadilla
- Sabadilla Officinarum
- Sabal Serrulata
- Sabina
- Sambucus Nigra
- Sanguinaria Canadensis
- Sanicula Aqua
- Sarsaparilla
- Scilla
- Scilla Maritima
- Secale Cornutum
- Selenium
- Selenium Metallicum
- Senecio Aureus
- Senega
- Sepia
- Sepia Officinalis
- Silicea
- Solidago Virga Aurea
- Spigelia Anthelmia
- Spongia Tosta
- Stannum Metallicum
- Staphisagria
- Staphysagria
- Sticta Pulmonaria
- Stramonium
- Strontium
- Strontium Carbonicum
- Strophanthus Hispidus
- Sulfur
- Sulfur Iodatum
- Sulfuricum Acidum
- Sulphur
- Sulphuricum Acidum
- Sumbul
- Symphytum Officinale