This is a general list of long-term side effects associated with Antipsychotic (neuroleptic) medication. Many patients will not develop these side effects, although there is still a significant possibility of risks associated with Antipsychotic usage. The percentage of patients affected by side effects like Tardive dyskinesia is significantly high and estimated to be a 20-50% prevalence. This is only a list of long term side effects, and many consumers of these drugs may experience a decline in these side effects over time if they continue to take the medicine.