- Obgemsa
- Ocaliva
- Oceral Cream
- Octasa
- Octasa (Mesalazine)
- Ocufen Eye Drops
- Ocuflox Eye Drops
- Odactra 12 SQ-HDM Sublingual Tablets
- Oesclim Patches
- Oestrogel Pump
- Ofev
- Oflox Eye/Ear Drops
- Ofloxacin
- Olanzapine
- Olanzapine ODT
- Olbetam
- Olestyr Regular Orange Packets
- Olestyr Sugar Free Orange Packets
- Olmesartan
- Olmesartan / Amlodipine / HCTZ
- Olmesartan Amlodipine
- Olmesartan HCTZ
- Olmesartan/HCTZ
- Olmetec
- Olmetec Plus
- Olopatadine Eye Drop
- Olopatadine Eye Drops
- Olopatadine Ophthalmic Solution
- Olumiant
- Omacor
- Omega-3-Acid Ethyl Esters
- Omeprazole
- Omnaris Nasal Spray
- Onbrez Breezhaler
- Ondansetron
- Ondansetron ODT
- Ondansetron Oral Solution
- Ondissolve
- One-Alpha
- One-Alpha Drops
- Ongentys
- Onglyza
- Onreltea
- Onsior for Cats 2.5-6kg (Pink)
- Onsior for Dogs 10-20kg (Green)
- Onsior for Dogs 2.5-5kg (Orange)
- Onsior for Dogs 20-40kg (Brown)
- Onsior for Dogs 5-10kg (Purple)
- Onstryv
- Opatanol
- Opticrom Eye Drops
- Optilast
- Optimmune Ophthalmic Ointment
- Optivar
- Opzelura Cream
- Oracea
- Oralair
- Orap
- Orgalutran Injection
- Orgovyx
- Orilissa
- Orlistat
- Ornidazole
- Orphenadrine
- Ortho Evra (200/35mcg / 24hrs)
- Orthovisc
- Orthovisc Syringe (3 syringes x 2ml)
- Oruvail
- Oruvail Gel
- Oruvail SR
- Oseltamivir
- Osphena
- Ospolot
- Osto Vitamin D2
- Osurnia Ear Gel
- Otezla
- Otrivin Fast Relief Adult Nasal Spray
- Ovestin Cream
- Oxaliplatin Vial
- Oxaliplatin Vial (5mg/ml)
- Oxcarbazepine
- Oxcarbazepine XR
- Oxeze Turbuhaler
- Oxis Turbuhaler
- Oxistat Cream
- Oxtellar XR
- Oxybutynin
- Oxybutynin XL
- Oxytrol (3.9mg/24hr)
- Ozanex Cream
- Ozempic 1mg dose
- Ozempic (0.25mg or 0.5mg Dose)
- Ozonol
