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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

causal agent, cause, causal agency go
any entity that produces an effect or is responsible for events or results

agent go
a substance that exerts some force or effect

drug go
a substance that is used as a medicine or narcotic

medicine, medication, medicament, medicinal drug go
(medicine) something that treats or prevents or alleviates the symptoms of disease

blocker, blocking agent
a class of drugs that inhibit (block) some biological process

noun.artifact

4 Subcategories

alpha blocker, alpha-blocker, alpha-adrenergic blocker, alpha-adrenergic blocking agent go
any of various drugs that block alpha-adrenergic receptors
beta blocker, beta-blocking agent, beta-adrenergic blocker, beta-adrenergic blocking agent go
any of various drugs used in treating hypertension or arrhythmia
labetalol, labetalol hydrochloride, Trandate, Normodyne go
antihypertensive drug (trade names Trandate and Normodyne) that blocks alpha and beta-adrenergic receptors of the sympathetic nervous system (leading to a decrease in blood pressure)
neuromuscular blocking agent go
a substance that interferes with the neural transmission between motor neurons and skeletal muscles