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From your description possible causes of your suffering in order of preference:
-Hypertension: as you are responding to verapamil
episodes: need assessment by psychiatrist
-Alcohol use increase problem in long term, so it is better to stop its use.
-B12 deficiency: it lead to anxiety and depression
If problem is very severe and leading to frequent interpersonal problems, then for assessment and treatment, you can visit specialist like psychiatrist.
I hope this information has been both informative and helpful for you.
Wish you Good Health.
Dr. Ashish Mittal