So it becomes a false transmitter . It inhibits tyrosine hydroxylase which is the rate limiting enzyme for catecholamine synthesis . Carbidopa It works peripherally . It inhibits conversion of L DOPA to dopamine . Carbidopa is used in Parkinson's disease since want the L DOPA you are giving to the patient to shift to the CNS and not in the periphery.
Reserpine decreases catecholamines since the catecholamines end up getting degraded by enzymes .
Malathion Reversible Ach Inhibitors Block for 30 minutes letting Ach build up. Pseudoreversible Ach Inhibitors Takes more time to reverse their action. Reversible Inhibition Of Acetyl Choline Esterase Edrophonium binds to both sites and form enzyme inhibition complex increasing Ach at synaptic cleft giving constant depolarization. Irreversible Inhibition Of Acetyl Choline Esterase DPF binds to esteratic site giving inactivated phosphorylated enzyme making enzyme useless. It is responsible for breakdown of catecholamines .