Rivastigmine

It is available in the salt form of Rivastigmine tartarate.

Action:
It is a parasympathomimetic (cholinergic) agent.

Uses:
It is used in the treatment of mild to moderate dementia caused by Alzheimer's disease or Parkinson's disease.

Physostigmine

Physostigmine is avalaible in the salt form of Physostigmine hydrochloride and Physostigmine Salicylate. It is a parasympathomimetic and is a reversible cholinesterase inhibitor.

Uses:
It is used in the treatment of Alzheimer's disease. It is also used for the treatment of glaucoma.

Memantine

Mematine is available in the salt form as a compound of Memantine hydrochloride.

Mechanism of Action:
Memantine is an N-methyl-D-Aspartate (NMDA) receptor antagonist.

Uses:
It is used in the management of Alzheimer's disease.

Galantamine

It is available in the salt form of Galantamine Hydrobromide.

Action:
It is an acetylcholinesterase inhibitor working additionally on acetylcholine receptor in this way it not only inhibits breakdown of acetylcholine but also results in its distribution.

Uses:
It is used in the treatment of mild to moderate Alzheimer's disease and various memory impairments.