11Calcium Channel Blocker
The calcium channel blocker, such as Verelan or Calan, is one of the most powerful treatment options for cluster headaches. It is often available in the form of pills. Your doctor might suggest this medication for long-term solutions. Ideally, you can take it alone or combine with other drugs to maximize the benefits. However, there might be some possible side effects such as swollen ankles, low blood pressure, constipation, nausea, or vomiting. [11]















