Nitrates: Fildena 100 mg taken in combination with nitrates or nitric oxide donors (nitroglycerin), which are used to treat heart diseases or chest discomfort (angina), may cause a rapid drop in blood pressure. This drop in blood pressure may cause dizziness, fainting, or even a heart attack or stroke.
Alpha-blockers: Alpha-blockers used to treat high blood pressure or prostate issues can lower blood pressure when coupled with Vidalista 20 mg, causing dizziness, lightheadedness, or fainting.