Super Tadalis SX with any nitrate-containing medications (such as nitroglycerin, isosorbide dinitrate, isosorbide mononitrate) because that combination can cause a dangerous, potentially life‑threatening drop in blood pressure. Who specifically must avoid the combination: Anyone currently taking prescription nitrates for chest pain/angina (for example, nitroglycerin tablets, sprays, patches, or long‑acting nitrates). People using recreational “poppers” (amyl nitrite, amyl nitrate), which are nitrate vasodilators. Anyone prescribed nicorandil (contains a nitrate‑like component), because it has the same dangerous interaction with PDE5 inhibitors. Patients with unstable cardiovascular disease for whom sexual activity is inadvisable; these patients should not use PDE5 inhibitors like tadalafil-containing products without cardiology clearance. Practical advice: If you take nitrates, do not start Super Tadalis SX; discuss alternative ED treatments with your prescriber. If you take Super Tadalis SX, avoid using any nitrate (including emergency sublingual nitroglycerin) within the recommended washout period for tadalafil (nitrates should be avoided while tadalafil is active). Specific timing guidance varies, so ask your physician or pharmacist for personalized instructions. If you experience dizziness, fainting, or a very low blood pressure after combining these drugs, seek emergency care immediately. If you want, I can check the official prescribing information for Super Tadalis SX or for tadalafil to give the exact recommended waiting times and wording; tell me which you'd prefer.