Search for a drug by part of the name...
Drugs: O
Learn about your prescription drugs and over-the-counter medicines. Includes side effects, dosage, special precautions, and more.
For FDA approved labels included in drug packages, see DailyMed.
- Obeticholic Acid
- Obinutuzumab Injection
- Ocaliva® see Obeticholic Acid
- Ocella® (as a combination product containing Drospirenone, Ethinyl Estradiol) see Estrogen and Progestin (Oral Contraceptives)
- Ocrelizumab Injection
- Ocrevus® see Ocrelizumab Injection
- Octreotide
- Octreotide Injection
- Ocu-Cort® (as a combination product containing Bacitracin Zinc, Hydrocortisone, Neomycin, Polymyxin B Sulfates) see Bacitracin Ophthalmic
- Ocu-Mycin® see Gentamicin Ophthalmic
- Ocu-Tropine® see Atropine Ophthalmic
- Ocufen® see Flurbiprofen Ophthalmic
- Ocuflox® see Ofloxacin Ophthalmic
- Odefsey® (as a combination product containing Emtricitabine, Rilpivirine, Tenofovir) see Emtricitabine, Rilpivirine, and Tenofovir
- Odevixibat
- Odomzo® see Sonidegib
- Ofatumumab Injection (Chronic Lymphocytic Leukemia)
- Ofatumumab Injection (Multiple Sclerosis)
- Ofev® see Nintedanib
- Ofirmev® see Acetaminophen Injection
- Ofloxacin
- Ofloxacin Ophthalmic
- Ofloxacin Otic
- Ogen® Cream see Estrogen Vaginal
- Ogen® Tablets (estropipate) see Estrogen
- Ogestrel® (as a combination product containing Ethinyl Estradiol, Norgestrel) see Estrogen and Progestin (Oral Contraceptives)
- Ogivri® (trastuzumab-dkst) see Trastuzumab Injection
- Olanzapine
- Olanzapine and Samidorphan
- Olanzapine Injection
- Olaparib
- Olaratumab Injection
- Oleptro® see Trazodone
- Oliceridine Injection
- Olinvyk® see Oliceridine Injection
- Olmesartan
- Olodaterol Oral Inhalation
- Olopatadine Nasal Spray
- Olopatadine Ophthalmic
- Olsalazine
- Olumiant® see Baricitinib
- Olutasidenib
- Olux® see Clobetasol Topical
- Olysio® see Simeprevir
- Omacetaxine Injection
- Omadacycline
- Omadacycline Injection
- Omalizumab Injection
- Ombitasvir, Paritaprevir, and Ritonavir
- Ombitasvir, Paritaprevir, Ritonavir, and Dasabuvir
- Omega-3 Fatty Acids
- Omeprazole
- Omidenepag Isopropyl Ophthalmic
- Omlonti® see Omidenepag Isopropyl Ophthalmic
- Omnaris® see Ciclesonide Nasal Spray
- Omnicef® see Cefdinir
- Omnihist II LA® (as a combination product containing Chlorpheniramine, Methscopolamine, Phenylephrine) see Phenylephrine
- Omnihist® LA (as a combination product containing Chlorpheniramine Maleate, Methscopolamine Nitrate, and Phenylephrine Hydrochloride) see Chlorpheniramine
- Omnipen-N® see Ampicillin Injection
- Omnipen® see Ampicillin
- Omnipred® see Prednisolone Ophthalmic
- Omnitrope® see Somatropin
- Omtryg® see Omega-3 Fatty Acids
- OnabotulinumtoxinA Injection
- Oncaspar® see Pegaspargase Injection
- Oncet® (as a combination product containing Acetaminophen, Hydrocodone) see Hydrocodone Combination Products
- Oncovin® see Vincristine Injection
- Ondansetron
- Ondansetron Injection
- Onfi® see Clobazam
- Ongentys® see Opicapone
- Onglyza® see Saxagliptin
- Onivyde® see Irinotecan Lipid Complex Injection
- Onmel® see Itraconazole
- Onsolis® see Fentanyl
- Ontak® see Denileukin Diftitox Injection
- Onureg® see Azacitidine
- Onzetra Xsail® Nasal Powder see Sumatriptan Nasal
- Opalescence® see Fluoride
- Opana® see Oxymorphone
- Opana® ER see Oxymorphone
- Opcicon® One-Step see Levonorgestrel
- Opdivo® see Nivolumab Injection
- Opdualag® see Nivolumab and relatlimab-rmbw
- Opicapone
- Opsumit® see Macitentan
- Optigene® 3 see Tetrahydrozoline Ophthalmic
- OptiPranolol® see Metipranolol Ophthalmic
- Optivar® see Azelastine Ophthalmic
- OPV see Polio Vaccine
- Opzelura® see Ruxolitinib Topical
- Ora-Line® see Fluoride
- Ora-Testryl® see Fluoxymesterone
- Oracea® see Doxycycline
- Oral Defense® see Fluoride
- Oral-B® see Fluoride
- Oralone® Dental Paste see Triamcinolone Topical
- Oramorph® SR see Morphine
- Orap® see Pimozide
- Orapred® see Prednisolone
* This branded product is no longer on the market. Generic alternatives may be available.
** These products are not currently approved by the FDA for safety, effectiveness, and quality. Federal law generally requires that prescription drugs in the U.S. be shown to be both safe and effective prior to marketing. Please see the FDA website for more information on unapproved drugs (http://www.fda.gov/AboutFDA/Transparency/Basics/ucm213030.htm ) and the approval process (http://www.fda.gov/Drugs/ResourcesForYou/Consumers/ucm054420.htm ).