Filitra 40 mg, because the combination can cause a dangerously severe drop in blood pressure. Here’s a detailed breakdown:   Who Should Avoid Filitra 40 mg with Nitrates Patients taking nitrates for heart conditions, such as: Nitroglycerin (sprays, tablets, patches) Isosorbide mononitrate or isosorbide dinitrate These are often prescribed for angina (chest pain) or heart disease. People using recreational nitrates, sometimes called “poppers.” Patients with severe cardiovascular disease: Recent heart attack or stroke Severe heart failure Unstable angina  Why the Combination Is Dangerous Filitra 40 mg contains Sildenafil, a PDE‑5 inhibitor. It relaxes blood vessels to improve blood flow. Nitrates also dilate blood vessels. Together, they can cause extreme hypotension (very low blood pressure), leading to dizziness, fainting, heart attack, or stroke.   Safer Alternatives If you need treatment for erectile dysfunction but take nitrates, talk to your doctor about alternatives that do not interact with nitrates. In short: anyone on nitrate therapy — prescription or recreational — must not take Filitra 40 mg under any circumstances. If you want, I can make a quick visual chart showing which heart medications interact dangerously with Filitra so it’s easy to check.