o
ob
- obatoclax mesylate (USAN)
- obecabtagene autoleucel (USAN, INN)
- oberadilol (INN)
- Obestin-30
- obeticholic acid (USAN, INN)
- obidoxime chloride (INN)
- oblimersen (INN)
- Obodence
- Obredon
- Oby-Trim
oc
oca-ocr
- Ocaliva
- ocaperidone (INN)
- ocfentanil (INN)
- ociltide (INN)
- ocinaplon (INN)
- ocrase (INN)
- ocrelizumab (INN)
- Ocrevus Zunovo
- Ocrevus
- ocrilate (INN)
- ocriplasmin (INN)
oct
octa-octo
- octabenzone (INN)
- octacaine (INN)
- octafonium chloride (INN)
- Octagam
- octamoxin (INN)
- octamylamine (INN)
- octanoic acid (INN)
- octapinol (INN)
- octastine (INN)
- octatropine methylbromide (INN)
- octaverine (INN)
- octazamide (INN)
- octenidine (INN)
- octimibate (INN)
- Octocaine
- octocog alfa (INN)
- octocrilene (INN)
- octodrine (INN)
- octopamine (INN)
- octotiamine (INN)
- octoxinol (INN)
octr
- Octreoscan
- octreotide (INN)
- octriptyline (INN)
- octrizole (INN)
ocu
- Ocuclear
- Ocufen
- Ocuflox
- Ocumycin
- Ocupress
- Ocusert Pilo
- Ocusulf
ocz
- Oczyesa
od-oj
- odanacatib (USAN)
- odronextamab (INN)
- odulimomab (INN)
- ofatumumab (INN)
- ofloxacin
- Ogestrel
- Ogivri
- oglufanide disodium (USAN)
- Ogsiveo
- Ohtuvayre
- Ojemda
- Ojjaara
ol
- olaflur (INN)
- olanzapine (INN)
- olaquindox (INN)
- olaratumab (USAN)
- oleandomycin (INN)
- Oleptro
- oletimol (INN)
- olezarsen (USAN, INN)
- olivomycin (INN)
- olmesartan (USAN, INN)
- olmidine (INN)
- olodaterol (INN)
- olopatadine (INN)
- olpadronic acid (INN)
- olpimedone (INN)
- olprinone (INN)
- olradipine (INN)
- olsalazine (INN)
- oltipraz (INN)
- Olux
- olvanil (INN)
om-on
- omacetaxine mepesuccinate (USAN)
- omadacycline (USAN, INN)
- omalizumab (INN)
- omalizumab-igec
- omapatrilat (INN)
- omecamtiv mecarbil (USAN, INN)
- omeprazole (INN)
- omidoline (INN)
- omidubicel (USAN, INN)
- omidubicel-onlv
- omiganan (USAN)
- omiloxetine (INN)
- Omisirge
- Omlyclo
- Omnaris
- Omnicef
- Omnipaque
- Omnipen
- Omniscan
- Omnitarg
- omoconazole (INN)
- omonasteine (INN)
- omtriptolide sodium (USAN)
- Omvoh
- Ona Mast
- onabotulinumtoxinA (USAN)
- onaclostox
- onamelatucel-L (USAN)
- Onapgo
- onapristone (INN)
- onasemnogene abeparvovec (USAN, INN)
- onasemnogene abeparvovec-brve
- Onbevzi
- Oncaspar
- Oncovin
- ondansetron (INN)
- onercept (USAN)
- Onoact
- onrehi (INN)
- onsifocon A (USAN)
- Ontak
- ontazolast (INN)
- Ontruzant
- Onyda XR
- Onyu
op
- opanixil (INN)
- Opcon
- Opdivo
- Opdivo Qvantig
- opebacan (INN)
- Ophthaine
- Ophthetic
- Ophthochlor
- Ophthocort
- Opill
- opiniazide (INN)
- opipramol (INN)
- opium
- opratonium iodide (INN)
- oprelvekin (INN)
- Opsumit
- Opsynvi
- Opticrom
- Optimark
- Optimine
- Optipranolol
- Optison
- Optivar
- Optomycin
- Opuviz
- Opvee