agent classified by route

More general terms

• pharmaceutical agent

More specific terms

• inhalation agent (inhalant)
• irrigation agent
• nasal agent
• ophthalmic agent (eyedrops)
• oral agent
• oropharyngeal agent
• otic agent; otologic agent; ear preparation
• parenteral agent
• rectal agent
• topical agent
• urethral agent
• vaginal agent