Is esgic (acetaminophen butalbital and caffeine) plus effective for migraine type headaches?

Not always. First, it depends on the cause of the headache, since it contains acetaminophen, caffeine, and a barbiturate. Its official indication is for severe tension headaches. There are other medicines that would be better for migraine treatment. If your headaches are severe, please see your doctor for diagnosis and any needed treatment.