Tfelt-Hansen, Peer C Is there an inherent limit to the efficacy of calcitonin gene-related peptide receptor antagonists in the acute treatment of migraine? A comment. [electronic resource] - The journal of headache and pain Dec 2009 - 389-91 p. digital Publication Type: Editorial ISSN: 1129-2377 Standard No.: 10.1007/s10194-009-0157-8 doi Subjects--Topical Terms: Azepines--pharmacologyCalcitonin Gene-Related Peptide--metabolismCalcitonin Gene-Related Peptide Receptor AntagonistsCerebral Arteries--drug effectsClinical Trials as TopicDipeptides--pharmacologyHumansImidazoles--pharmacologyMigraine Disorders--drug therapyPiperazinesQuinazolines--pharmacologyReceptors, Calcitonin Gene-Related Peptide--metabolismSerotonin Receptor Agonists--pharmacologyTreatment FailureTryptamines--pharmacology