Hope you are doing well. Taking high doses of. riboflavin (400 mg/day) can help reduce the number of migraine headache attacks and thus help in preventing migraine headaches. It may take up to three months to get best results. Calcium channel blockers can cause nausea, edema, rash, edema, low blood pressure etc.If you are anxious it is suggested to discuss your concerns with your treating physician. He may further refer you to the concerned specialist. Keep me posted with more queries and concerns.
Best luck and regards!