<prompt> Which of the following drugs is used for the prophylaxis of migraine but not for angina pectorisVerapamnilDiltiazemFlunarizineAmlodipine  <response>: Ref -KDT 6e p172 Flunarizine, sold under the brand name Sibelium among others, is a drug classified as a calcium antagonist which is used for various indications. It is not available by prescription in the United States or Japan. The drug was discovered at Janssen Pharmaceutica in 1968 