- Oracort-E In Orapaste Brand
- Oral Aid Brand
- Oral Impact Brand
- Oral Poliomyelitis Vaccine Brand
- Oral Rehydration Salts/Repalyte Brand
- Oral7 Brand
- Oralmet Brand
- Oral-T Brand
- Oramedy Brand
- Oramorph Brand
- Orap Brand
- Ora-Sed Jel Brand
- Orasol Brand
- Oratane Brand
- Orcigesic Brand
- Orciprenaline Generic
- Orencia Brand
- Orfarin Brand
- Orfiril 300 Retard Brand
- Orgalutran Brand
- Orgotein Generic
- Orlistat Generic
- Ormeloxifene Generic
- Ornidazole Generic
- Oroxine Brand
- Orphenadol Brand
- Orphenadrine Generic
- Orphenadrine + Paracetamol Generic
- Orrepaste Brand
- Orthoclone OKT3 Brand
- Orthovisc Brand
- Oruvail Brand