Name	Class	Category	OTC	FDA/IWN
Nystatin	Antiinfective Agent, Dermatological/Topical Agent, Topical Antiinfective Agent, Mouth and Throat Preparation, Antifungal Agent	Allopathy	OTC	FDA
Octreotide	Peptides/Polypeptides, Hormone Inhibitor	Allopathy	Prescription
Octyldimethyl p-aminobenzoate	Dermatological/Topical Agent, Sunscreen	Allopathy	Prescription	FDA
Ofloxacin	Antiinfective Agent, Dermatological/Topical Agent, Topical Antiinfective Agent, Ophthalmic Preparation	Allopathy	Prescription	FDA
Oil Clove	Nutritional Supplement	Allopathy	OTC	FDA
Oil Eucalyptus	Nutritional Supplement	Allopathy	OTC	FDA
Oil Turpentine	Nutritional Supplement	Allopathy	OTC	FDA
Olanzapine	Central Nervous System Agent, Psychotherapeutic Agent, Atypical Antipsychotic	Allopathy	Prescription	FDA
Olmesartan	Cardiovascular Agent, Antihypertensive, Angiotensin Receptor Blocker (ARB)	Allopathy	Prescription	FDA
Olmesartan Medoxomil	Cardiovascular Agent, Antihypertensive, Angiotensin Receptor Blocker (ARB)	Allopathy	Prescription	FDA
Olopatadine	Dermatological/Topical Agent, Ophthalmic Preparation, Antihistamine, Decongestant, Nasal Preparation	Allopathy	Prescription	FDA
Omalizumab	Monoclonal Antibodies, Antiasthmatic	Allopathy	Prescription
Omega-3 Acid Ethyl Esters	Nutritional Supplement, Dietary Suppleement	Allopathy	Prescription	FDA
Omeprazole	Gastrointestinal Agent, Antiulcerants, Proton Pump Inhibitor (PPI)	Allopathy	Prescription	FDA
Omeprazole + Sodium Bicarbonate	Antiulcerants, Antiulcerant Combination	Allopathy	Prescription
Omeprazole Magnesium	Antiulcerants	Allopathy	Prescription
Ondansetron	Central Nervous System Agent, 5HT3 receptor Antagonist	Allopathy	Prescription	FDA
Orlistat	Metabolic Agent, Antiobese Agent	Allopathy	Prescription	FDA
Ornidazole	Antiinfective Agent, Antiprotozoal / Amebicide	Allopathy	Prescription	FDA
Oseltamivir	Antiinfective Agent, Antiviral Agent	Allopathy	Prescription	FDA