Critical analysis of the stages of drug discovery and drug development disorders of the nervous system.

Drug discovery stages: 1)Target identification and validation 2) Hit discovery 3) lead identification

Drug development stages: 1) Lead optimization (in vivo) 2) Human clinical trials 3) regulatory body approval.

Critically appraise 2 stages from drug discovery and 2 form drug development with reference to drugs discovered and developed for nervous system disorders preferably Epilepsy and Alzheimer’s. different drugs should be analysed throughout, appraising the success rate. ethics. cost-effectiveness, what worked and what didn’t in terms of chosen drug. preferably up-to-date references