Cialis
When taken on its own, Cialis can lead to mild reductions in blood pressure. However, combining it with nitrates or guanylate cyclase stimulators, such as riociguat (Adempas), may result in a significant and dangerous drop in blood pressure. Avoid using these medications together with Cialis, as it could cause dizziness, fainting, or even severe complications like a heart attack or stroke.
Sildenafil
Sildenafil can lower blood pressure across the body by relaxing arteries. Individuals with low blood pressure (below 90/50 mmHg) are advised to exercise caution when using sildenafil.