| Ortho-Novum 1/35 and/or Equivalents | Ortho 1/35, Ortho 1/35 Discreet | 
| Ortho-Novum 7/7/7 and/or Equivalents | Ortho 7/7/7, Ortho 7/7/7 Discreet | 
| Orthovisc Syringe and/or Equivalents | Orthovisc Syringe | 
| Orudis and/or Equivalents | Ketoprofen, Ketoprofen-E | 
| Oruvail CR and/or Equivalents | Oruvail CR, Ketoprofen SR, Oruvail SR | 
| Oruvail Gel and/or Equivalents | Oruvail Gel | 
| Ospolot and/or Equivalents | Ospolot | 
| Ostoforte and/or Equivalents | Ergocalciferol | 
| Osvaren and/or Equivalents | Osvaren | 
| Otezla and/or Equivalents | Otezla | 
| Otixal Otic Ear Drop Vials and/or Equivalents | Otixal Otic Ear Drop Vials 0.25 ml | 
| Otomax Ointment and/or Equivalents | Otomax | 
| Otrivin Gentle Stream Sea Water & Aloe Vera and/or Equivalents | Otrivin Gentle Stream Sea Water & Aloe Vera | 
| Otrivin Metered Dose Pump and/or Equivalents | Otrivin Metered Dose Pump, Otrivine Adult Metered Dose Pump | 
| Otrivin Spray and/or Equivalents | Otrivin Nasal Spray, Otrivin Nasal Spray, Otrivin Spray, Otrivine Nasal Spray | 
| Otrivin With Moisturizers and/or Equivalents | Otrivin With Moisturizers Measured Dose Pump, Otrivin With Moisturizers Nasal Spray | 
| Otrivine Adult Congestion Relief Menthol Nasal Spray and/or Equivalents | Otrivine Adult Congestion Relief Menthol Nasal Spray | 
| Ovestin HRT Cream and Applicator and/or Equivalents | Ovestin Cream, Ovestin HRT Cream and Applicator | 
| Ovol 80 and/or Equivalents | Ovol 80 | 
| Ovol Drops and/or Equivalents | Ovol Drops | 
| Ovol Ultra Strength and/or Equivalents | Ovol Ultra Strength, Ovol Ultra Strength Softgel | 
| Oxeze Turbuhaler and/or Equivalents | Oxeze Turbuhaler, Oxis Turbuhaler | 
| Oxybuprocaine HCL and/or Equivalents | Minims Oxybuprocaine HCL | 
| Oxytrol and/or Equivalents | Oxytrol | 
| Ozonol and/or Equivalents | Ozonol |