If i am on lotrel (amlodipine and benazepril) is it safe for me to take a male enhancement or enlargement pill such as blue tenacity?

You can: There are no reported interactions between these medications and supplements. Blue tenacity is L-arginine and ginkgo biloba extract.

Harmful: to your wallet. These male enhancement products don't work, are expensive, and often have multiple ingredients which have never been studied. Best case scenario- its merely a placebo causing you no harm. Worst case- it interacts with your medications causing a potentially serious reaction.