Biohaven Pharma says treatment for acute migraine (vazegepant) succeeds in study December 17, 2019https://www.reuters.com/article/us-biohaven-pharma-study/biohaven-pharma-says-treatment-for-acute-migraine-succeeds-in-study-idUSKBN1YL1GM Biohaven Pharma says treatment for acute migraine succeeds in study