Drug used in an ameliorative test for myasthenia gravis is:
Drug used in ameliorative test (tensilon test) for myasthenia gravis is edrophonium. It is a cholinergic drug and can be used for diagnosis of myasthenia gravis because of its short duration of action (10 - 30 min.)
Physostigmine
Edrophonium
Tacrine
Pyridostigmine