O (continued)
- oblimersen sodium
- octreotide acetate
- octreotide pamoate
- odanacatib
- Oestrogenine
- Oestromenin
- Oestromon
- ofatumumab
- ofloxacin
- oglufanide disodium
- olanzapine
- olaparib
- oligofructose-enriched inulin
- oligonucleotide SPC2996
- omacetaxine mepesuccinate
- ombrabulin
- omeprazole
- Omnitarg
- Oncaspar
- Oncaspar-IV
- OncoGel
- OncoLAR
- oncolytic adenovirus Ad5-Delta 24RGD
- oncolytic adenovirus encoding GM-CSF
- oncolytic HSV-1716
O (continued)
- oncolytic measles virus encoding thyroidal sodium iodide symporter
- Onconase
- Oncophage
- OncoVEX GM-CSF
- ondansetron
- ondansetron hydrochloride
- Onrigin
- Onsolis
- ONTAK
- ONYX-015
- opioid growth factor
- opium tincture
- Optison
- Ora-Testryl
- Oracit
- oral fludarabine phosphate
- oral Hsp90 inhibitor IPI-493
- oral JAK inhibitor INCB18424
- oral JAK2 inhibitor SB1518
- oral microencapsulated diindolylmethane
- oral milataxel
- oral picoplatin
- oral sodium phenylbutyrate
- oral topotecan hydrochloride
- Oralet