Why I have dizziness when I am taking medicine for hypertension

Condition analysis:
Hi, first of all I want to know whether you are a diabetic or not. If you are a diabetic and on insulin or oral medicine then it may be due to hypoglycemia.
The dizziness may be due to thiazide induced hypotension ( excessive fall of BP). Low potassium and sodium can happen with thiazide intake, but less likely with lower doses. Next time plz check your BP when you feel dizzy, and also get serum sodium and potassium level done. If the dizziness is due to excessive fall of BP then better take the medicine at bed time. Thanks

Instructions:
Broccoli: Broccoli is high in dietary fiber and vitamin A. It has also been known to reduce blood pressure and strengthen the heart. Consume broccoli in any form on a regular basis to have a stable and within-normal-limits blood pressure.

Celery: Celery is rich in 3-N-butylphthalide - a compound that helps lower the blood pressure and strengthen the heart. This phytochemical is not found in other common vegetables. Celery has also been found to reduce stress hormones that constrict blood vessels. Therefore, regular intake of celery, in any form, can prove to be beneficial in providing relief from hypertension and mental stress.