Clinical Practice Guidelines (CPGs) for management of dementia published by the Indian Psychiatric Society (Shaji. et al., 2018) lists the following approved anti-dementia drugs (Cholinesterase Inhibitors):

• Donepezil
• Rivastigmine
• Galantamine
• Rivastigmine Transdermal Patch
• Donepezil Extended Release
• NMDA Antagonist Memantine.

References:

Shaji, K.S., Sivakumar, P.T., Rao, G.P., Paul, N., (2018). Clinical Practice Guidelines for Management of Dementia. Indian J. Psychiatry 60, S312–S328. https://doi.org/10.4103/0019-5545.224472