Brief Answer:
Should be best avoided.

Detailed Answer:
Welcome to Healthcaremagic.
Hi, I am Dr Anshul Varshney , I have read your query in detail , I understand your concern.
Viagra or related drugs should be best avoided in people suffering from uncontrolled high blood pressure as well as people suffering from Ischemic heart diseases.
So, if you are hypertensive and wish to takes Viagra, first of all you should get your blood pressure under well control and if it is under control, then you should get your cardiac evaluation done to be sure that you don't have any cardiac issues.
If your are clear of cardiac issues, then you may take viagra.

This is my personal opinion based on details available here. If you still have any other query, you may please ask me.
Stay Healthy.
Dr Anshul Varshney , MD

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