Yes, Haldol is one of the first-gen antipsychotics/neuroleptics/major tranquilizers.

As in one of the names: ''neuro'' indicates nerves or nervous system and "leptic" comes from ''lepsis'', meaning to take hold of. This also holds very true to the other name, "major tranquilizer".

So these older of "typical" antipsychotics are clinically known to often cause sedation, or tranquilizing effects.

New-gen or atypical antipsychotics are not immune to this kind of side effect- I take Seroquel and like a cluster of other people, feel a sedative effect. It is however true that this occurs less with new-gen APs.