I am so sorry (old nurse forgets to explain)--EPS =Extrapyramidal Side Effects that cause involuntary movements (for example, continuous spasms, often one-sided, restlessness, slowed movement,shuffling gait, repetitive movements you cannot control, the tongue can be affected--the symptoms are much like some neurological disorders. EPS is reversible, often a medication (like Cogentin) is used to help with this very uncomfortable side effect. TD is Tardive Dyskinesia---the same symptoms but permanent and usually set in after years of use.
Some antipsychotic medications are more likely to cause this very troubling side effect. Haldol is one of them.
Do talk to your pdoc and tell them your experience --- one hour of effect is very short and likely not very effective. Whenever you are prescribed a med do ask the prescriber to review all side effects with you, and make sure they know if you are taking any other meds (even over the counter)---