Duratia 60 mg contains Tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor, used to treat erectile dysfunction (ED). Dizziness is a known side effect, and here’s why it can happen, explained step by step: Blood vessel dilation: Tadalafil works by relaxing smooth muscles in blood vessels, especially around the *****, to increase blood flow. This action can also lower blood pressure systemically, meaning your overall blood pressure may drop temporarily. Reduced blood flow to the brain: When blood pressure drops, less blood may reach the brain momentarily, which can trigger lightheadedness or dizziness, particularly when standing up quickly (a phenomenon called orthostatic hypotension). Interaction with other medications: If someone is taking nitrates, alpha-blockers, or certain blood pressure drugs, the blood-pressure-lowering effect of Tadalafil can be enhanced, making dizziness more likely. Other contributing factors: Dehydration, alcohol, or fatigue can worsen dizziness because they also reduce blood flow or affect the nervous system. Important note: If dizziness is severe, persistent, or accompanied by chest pain, fainting, or vision changes, it could indicate a serious problem and requires immediate medical attention.