Browse Topics
Obesity
Obesity and Pregnancy
Obesity: Should I Have Weight-Loss Surgery?
Obesity: Should I Take Weight-Loss Medicine?
Obesity: Should I Use a Diet Plan to Lose Weight?
Obeticholic Acid Oral Tablet (OBETICHOLIC ACID - ORAL)
Obinutuzumab Injection (OBINUTUZUMAB - INJECTION)
Object in the Eye: First Aid
Object in the Vagina
Object Stuck in a Child's Airway
Object Stuck in the Throat
Objects in the Ear
Objects in the Eye
Objects in the Nose
Obsessive-Compulsive Disorder (OCD)
Obsessive-Compulsive Disorder: Should I Take Medicine for OCD?
Obstetric Panel
Obstructive sleep apnea: Fast Facts
Occupational Asthma
Occupational Therapy
Ocrelizumab Injection (OCRELIZUMAB - INJECTION)
Octreotide Delayed Release Oral Capsule (OCTREOTIDE DELAYED-RELEASE - ORAL)
Octreotide Injectable Solution (OCTREOTIDE - INJECTION)
Octreotide Injection 0.05 mg/mL (1 mL) (OCTREOTIDE - INJECTION)
Octreotide Injection 0.1 mg/mL (1 mL) (OCTREOTIDE - INJECTION)
Octreotide Injection 0.5 mg/mL (1 mL) (OCTREOTIDE - INJECTION)
Octreotide Injection (OCTREOTIDE DEPOT SUSPENSION - INJECTION)
Octreotide Prefilled Syringe (OCTREOTIDE - INJECTION)
Ofatumumab Injection (OFATUMUMAB - INJECTION)
Ofatumumab Pen Injector (OFATUMUMAB - SUBCUTANEOUS INJECTION)
Office Ergonomics
Ofloxacin Ophthalmic Solution (OFLOXACIN SOLUTION - OPHTHALMIC)
Ofloxacin Oral Tablet (OFLOXACIN - ORAL)
Ofloxacin Otic Solution (OFLOXACIN SOLUTION - OTIC)
Olanzapine Disintegrating Oral Tablet (OLANZAPINE DISINTEGRATING TABLET - ORAL)
Olanzapine Injection 10 mg (OLANZAPINE - INTRAMUSCULAR)
Olanzapine Injection (OLANZAPINE EXTENDED RELEASE - INJECTION)
Olanzapine Oral Tablet (OLANZAPINE - ORAL)
Olanzapine/Samidorphan Oral Tablet (OLANZAPINE/SAMIDORPHAN - ORAL)
Olaparib Oral Tablet (OLAPARIB TABLET - ORAL)
Olaratumab Injection (OLARATUMAB - INJECTION)
Older Adults: Be Inspired to Get Active
Older Adults: Getting Active After a Health Scare
Older Adults: Making Physical Activity a Routine
Older Adults: Overcoming Barriers to Fitness
Olive Oil/Soybean Oil Injection
Olmesartan Oral Tablet (OLMESARTAN - ORAL)
Olodaterol Inhalation Spray (OLODATEROL - INHALATION)
Olodaterol/Tiotropium Inhalation Spray (TIOTROPIUM/OLODATEROL - INHALATION)
Olopatadine Metered Dose Nasal Spray (OLOPATADINE SPRAY - NASAL)
Olopatadine Ophthalmic Solution (OLOPATADINE - OPHTHALMIC)
Olsalazine Oral Capsule (OLSALAZINE - ORAL)
Omacetaxine Mepesuccinate Injection (OMACETAXINE - SUBCUTANEOUS INJECTION)
Omadacycline Injection (OMADACYCLINE - INJECTION)
Omadacycline Oral Tablet (OMADACYCLINE - ORAL)
Omalizumab for Asthma
Omalizumab Injection (OMALIZUMAB - INJECTION)
Omalizumab Prefilled Syringe (OMALIZUMAB - INJECTION)
Omaveloxolone Oral Capsule (OMAVELOXOLONE - ORAL)
Omega-3 Acid Ethyl Esters (USP) Oral Capsule (OMEGA-3 ACID ETHYL ESTERS - ORAL)
Omeprazole Delayed Release Oral Capsule (OMEPRAZOLE DELAYED-RELEASE CAPSULE - ORAL)
Omeprazole Delayed Release Oral Tablet (OMEPRAZOLE DELAYED RELEASE TABLET - ORAL)
Omeprazole Granules for Oral Suspension 2.5 mg (OMEPRAZOLE DELAYED-RELEASE PACKET - ORAL)
Omeprazole Granules For Oral Suspension (OMEPRAZOLE DELAYED-RELEASE PACKET - ORAL)
Omeprazole/Sodium Bicarbonate Oral Capsule (OMEPRAZOLE/SODIUM BICARBONATE - ORAL)
Omeprazole/Sodium Bicarbonate Powder For Oral Suspension (OMEPRAZOLE/SODIUM BICARBONATE - ORAL)
Onasemnogene Abeparvovec Injection (ONASEMNOGENE ABEPARVOVEC - INJECTION)
Ondansetron Disintegrating Oral Tablet (ONDANSETRON DISINTEGRATING TABLET - ORAL)
Ondansetron Injectable Solution (ONDANSETRON - INJECTION)
Ondansetron Injection (ONDANSETRON - INJECTION)
Ondansetron Oral Film (ONDANSETRON SOLUBLE FILM - ORAL)
Ondansetron Oral Solution (ONDANSETRON - ORAL)
Ondansetron Oral Tablet (ONDANSETRON - ORAL)
Ondansetron Prefilled Syringe (ONDANSETRON - INJECTION)
Open Breast Biopsy: Before Your Surgery
Open Breast Biopsy: Returning Home
Open Carpal Tunnel Surgery
Open Gallbladder Surgery for Gallstones
Open Inguinal Hernia Repair (Herniorrhaphy, Hernioplasty)
Open Surgery for Kidney Stones
Open-Heart Surgery: Returning Home
Open-Joint Arthroplasty for Temporomandibular Disorders
Ophthalmoscopy
Opicapone Oral Capsule (OPICAPONE - ORAL)
Opioid Use Disorder
Opioids
Opioids for Children
Opioids: Know What's Safe
Opium Oral Solution (OPIUM TINCTURE - ORAL)
Opportunistic Infections in HIV
Optic Neuritis
Oral Breathing Devices for Sleep Apnea and Snoring
Oral Breathing Devices for Snoring
Oral Cancer
Oral Cavity and Nasopharyngeal Cancers Screening (PDQ®): Screening - Health Professional Information [NCI]
Oral Cavity and Nasopharyngeal Cancers Screening (PDQ®): Screening - Patient Information [NCI]
Oral Cavity, Oropharyngeal, Hypopharyngeal, and Laryngeal Cancers Prevention (PDQ®): Prevention - Health Professional Information [NCI]
Oral Cavity, Oropharyngeal, Hypopharyngeal, and Laryngeal Cancers Prevention (PDQ®): Prevention - Patient Information [NCI]
Oral Complications of Cancer Therapies (PDQ®): Supportive care - Health Professional Information [NCI]
Oral Complications of Chemotherapy and Head/Neck Radiation (PDQ®): Supportive care - Patient Information [NCI]
Oral Glucose Tolerance Test (OGTT)
Oral Rehydration Solutions for Children
Orchiectomy
Orchiectomy for Prostate Cancer
Orchiopexy for Undescended Testicle
Organ Transplant
Organ Transplants: Antirejection Medicines
Organic Foods
Organizing Your Medical Records
Oritavancin Injection (ORITAVANCIN - INJECTION)
Orlistat Oral Capsule (ORLISTAT - ORAL)
Oropharyngeal Cancer Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
Oropharyngeal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
Orphenadrine Extended Release Oral Tablet (ORPHENADRINE - ORAL)
Orphenadrine Injection (ORPHENADRINE - INJECTION)
Orthognathic Surgery for Malocclusion
Orthopedic Surgery for Cerebral Palsy
Orthotics for Foot Problems
Oseltamivir Oral Capsule (OSELTAMIVIR - ORAL)
Oseltamivir Oral Suspension (OSELTAMIVIR SUSPENSION - ORAL)
Osgood-Schlatter Disease
Osilodrostat Oral Tablet (OSILODROSTAT - ORAL)
Osimertinib Oral Tablet (OSIMERTINIB - ORAL)
Ospemifene Oral Tablet (OSPEMIFENE - ORAL)
Osteoarthritis
Osteoarthritis: Exercising With Arthritis
Osteoarthritis: Fast facts
Osteoarthritis: Heat and Cold Therapy
Osteochondritis Dissecans of a Joint
Osteopathic Medicine
Osteoporosis
Osteoporosis: After Your Fracture
Osteoporosis Risk Factors
Osteoporosis Risk in Younger Women
Osteoporosis Screening
Osteoporosis: Should I Have a Dual-Energy X-Ray Absorptiometry (DXA) Test?
Osteoporosis: Should I Take Bisphosphonate Medicines?
Osteosarcoma and Undifferentiated Pleomorphic Sarcoma of Bone Treatment (PDQ®): Treatment - Health Professional Information [NCI]
Osteosarcoma Treatment (PDQ®): Treatment - Patient Information [NCI]
Osteotomy for Osteoarthritis
Other Health Problems Caused by Herpes Simplex Virus
Other Home Treatment Measures for a First-Degree Burn or Sunburn
Other Treatment: Questions to Ask the Doctor
Other Types of Counseling for PTSD
Outpatient Services
Ovarian Cancer
Ovarian Cancer: Should I Have My Ovaries Removed to Prevent Ovarian Cancer?
Ovarian Epithelial, Fallopian Tube, and Primary Peritoneal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
Ovarian Epithelial, Fallopian Tube, and Primary Peritoneal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
Ovarian, Fallopian Tube, and Primary Peritoneal Cancers Prevention (PDQ®): Prevention - Health Professional Information [NCI]
Ovarian, Fallopian Tube, and Primary Peritoneal Cancers Prevention (PDQ®): Prevention - Patient Information [NCI]
Ovarian, Fallopian Tube, and Primary Peritoneal Cancers Screening (PDQ®): Screening - Health Professional Information [NCI]
Ovarian, Fallopian Tube, and Primary Peritoneal Cancers Screening (PDQ®): Screening - Patient Information [NCI]
Ovarian Germ Cell Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
Ovarian Germ Cell Tumors Treatment (PDQ®): Treatment - Patient Information [NCI]
Ovarian Low Malignant Potential Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
Ovarian Low Malignant Potential Tumors Treatment (PDQ®): Treatment - Patient Information [NCI]
Overactive Bladder
Overcoming Anger
Overfeeding a Baby
Overflow Incontinence
Overnight Dexamethasone Suppression Test
Over-the-Counter Medicine Precautions
Over-the-Counter Medicines for Allergies
Overtraining
Overuse Injuries
Oxacillin Injectable Solution (OXACILLIN - INJECTION)
Oxacillin Injection 20 mg/mL (50 mL) (OXACILLIN - INJECTION)
Oxacillin Injection 40 mg/mL (50 mL) (OXACILLIN - INJECTION)
Oxacillin Injection (OXACILLIN - INJECTION)
Oxaliplatin Injection (OXALIPLATIN - INJECTION)
Oxandrolone Oral Tablet (OXANDROLONE - ORAL)
Oxaprozin Oral Tablet (OXAPROZIN - ORAL)
Oxaydo Oral Tablet 5 mg (OXYCODONE TABLET - ORAL USE ONLY)
Oxaydo Oral Tablet 7.5 mg (OXYCODONE TABLET - ORAL USE ONLY)
Oxazepam Oral Capsule (OXAZEPAM - ORAL)
Oxcarbazepine Extended Release Oral Tablet (OXCARBAZEPINE EXTENDED-RELEASE - ORAL)
Oxcarbazepine Oral Suspension (OXCARBAZEPINE SUSPENSION - ORAL)
Oxcarbazepine Oral Tablet (OXCARBAZEPINE - ORAL)
Oxiconazole Topical Cream (OXICONAZOLE NITRATE - TOPICAL)
Oxiconazole Topical Lotion (OXICONAZOLE NITRATE - TOPICAL)
Oxybate Oral Solution (SODIUM/CALCIUM/MAGNESIUM/POTASSIUM OXYBATES SOLUTION - ORAL)
Oxybutynin Extended Release Oral Tablet (OXYBUTYNIN EXTENDED-RELEASE - ORAL)
Oxybutynin Oral Solution (OXYBUTYNIN - ORAL)
Oxybutynin Oral Tablet (OXYBUTYNIN - ORAL)
Oxybutynin Topical Gel (OXYBUTYNIN GEL - TRANSDERMAL)
Oxybutynin Transdermal System (OXYBUTYNIN - TRANSDERMAL)
Oxycodone Extended Release Oral Capsule (OXYCODONE EXTENDED-RELEASE CAPSULE - ORAL)
Oxycodone Extended Release Oral Tablet (OXYCODONE EXTENDED-RELEASE - ORAL)
Oxycodone Oral Capsule (OXYCODONE - ORAL)
Oxycodone Oral Solution 20 mg/mL (concentrated) (OXYCODONE CONCENTRATE SOLUTION - ORAL)
Oxycodone Oral Solution (OXYCODONE - ORAL)
Oxycodone Oral Tablet 15 mg (Abuse-Deterrent) (OXYCODONE TABLET - ORAL USE ONLY)
Oxycodone Oral Tablet 30 mg (Abuse-Deterrent) (OXYCODONE TABLET - ORAL USE ONLY)
Oxycodone Oral Tablet 5 mg (Abuse-Deterrent) (OXYCODONE TABLET - ORAL USE ONLY)
Oxycodone Oral Tablet 5 mg (OXYCODONE - ORAL)
Oxycodone Oral Tablet (OXYCODONE - ORAL)
Oxycodone/Acetaminophen Oral Solution (OXYCODONE/ACETAMINOPHEN - ORAL)
Oxycodone/Acetaminophen Oral Tablet (OXYCODONE/ACETAMINOPHEN - ORAL)
Oxygen Therapy
Oxygen Therapy: Using Oxygen at Home
Oxygen Treatment for Chronic Obstructive Pulmonary Disease (COPD)
Oxymetazoline Nasal Spray (DECONGESTANT SPRAY - NASAL)
Oxymetazoline Ophthalmic Solution (OXYMETAZOLINE - OPHTHALMIC)
Oxymetazoline Topical Cream (OXYMETAZOLINE CREAM - TOPICAL)
Oxymetazoline/Tetracaine Metered Dose Nasal Spray (TETRACAINE/OXYMETAZOLINE SPRAY - NASAL)
Oxymorphone Extended Release Oral Tablet (OXYMORPHONE EXTENDED-RELEASE - ORAL)
Oxymorphone Oral Tablet (OXYMORPHONE - ORAL)
Oxytocin
Oxytocin Injectable Solution
Oxytocin Injection
Ozanimod Oral Capsule (OZANIMOD - ORAL)
Ozenoxacin Topical Cream (OZENOXACIN - TOPICAL)