Name	Class	Category	OTC	FDA/IWN
Sevoflurane	Central Nervous System Agent, Anesthetic	Allopathy	Prescription	FDA
Sildenafil	Cardiovascular Agent, Antihypertensive, Impotence Agent/Sex Stimulant	Allopathy	Prescription	FDA
Silicon Dioxide	Dermatological/Topical Agent, Nutritional Supplement	Allopathy	Prescription	FDA
Silodosin	Cardiovascular Agent, Antihypertensive, Alpha Adrenoreceptor Blocker	Allopathy	Prescription	FDA
Silver Sulphadiazine	Antiinfective Agent, Antibiotic, Dermatological/Topical Agent, Topical Antiinfective Agent	Allopathy	Prescription	FDA
Silymarin	Nutritional Supplement, Antioxidant	Allopathy	Prescription
Simethicone	Gastrointestinal Agent, Antiflatulent	Allopathy	OTC	FDA
Simvastatin	Metabolic Agent, Antihyperlipidemic/Lipid Lowering Agent, Statin	Allopathy	Prescription	FDA
Sitagliptin	Antidiabetic Agent, Metabolic Agent, Dipeptidyl peptidase 4 Inhibitor	Allopathy	Prescription	FDA
Sodium Acetate	Electrolyte and Mineral, Nutritional Supplement	Allopathy	Prescription	FDA
Sodium Acid Citrate	Uninary pH Modefier	Allopathy	Prescription	FDA
Sodium Alginate	Gastrointestinal Agent	Allopathy	Prescription	FDA
Sodium Bi Phosphate	Gastrointestinal Agent, Laxatives	Allopathy	Prescription	FDA
Sodium Bicarbonate	Nutritional Supplement, Mineral and Electrolyte, Uninary pH Modefier	Allopathy	OTC	FDA
Sodium Bicarbonate + Sodium Chloride	Dermatological/Topical Agent, Nasal Preparation, Lubricant and Irrigants	Allopathy	Prescription	FDA
Sodium Carbonate	Antacid, Gastrointestinal Agent	Allopathy	OTC	FDA
Sodium Chloride	Electrolyte and Mineral, Nutritional Supplement, Nasal Preparation	Allopathy	OTC	FDA
Sodium Chloride + Sodium Hydrogen Carbonate	Dermatological/Topical Agent, Nasal Preparation	Allopathy	Prescription	FDA
Sodium Citrate	Uninary pH Modefier	Allopathy	OTC	FDA
Sodium Cromoglycate	Respiratory Agent, Respiratory Inhalant, Antiasthmatic	Allopathy	Prescription	FDA