Drugs used to stop a migraine attack once it starts, and others taken regularly to make attacks less frequent.
Migraine drugs are acute (triptans narrow vessels via serotonin, plus pain-killers and anti-sickness) or preventive (some beta-blockers, antiepileptics, antidepressants); overusing pain-killers causes a rebound headache.
Cholinergic Pharmacology
Drugs that increase or block the action of acetylcholine.
Opioids
Strong analgesics acting on opioid receptors (e.g. morphine).
Antiepileptic Drugs
Drugs that control seizures by reducing abnormal neuronal firing.
Antipsychotics
Drugs used to treat psychosis, mainly by blocking dopamine.
Antiparkinsonian Drugs
Drugs that raise dopamine activity (and reduce the relative cholinergic activity) in the brain to relieve the stiffness, tremor and slowness of Parkinson's disease.
Antidepressant Drugs
Drugs that relieve depression mainly by raising the levels of the monoamine transmitters serotonin and noradrenaline at brain synapses.