Stage 2 HTN is nothing to joke around about! That usually means your BP is higher than 160/100, and it could mean a med emergency, and lead into a CVA, MI, or TIA.
I would call your md office and try to get your BP down, now?
Hawthorne extract has some effect on BP as it has a relaxing effect on the heart making it pump more effectively. Also increasing the amount of H2O will help with the headaches.
I have seen where Deca will some times interfer with vasotec, as well as lisinopril. But every one is different.