Tadalista can cause dizziness because it commonly contains tadalafil, which is a mild vasodilator. It relaxes blood vessels and can sometimes lower blood pressure, particularly when standing up, producing light-headedness or dizziness. Dizziness may be more likely when tadalafil is Tadalista with: Alcohol, especially substantial amounts, because both can lower blood pressure. Alpha-blockers or blood-pressure medicines, which can add to the blood-pressure-lowering effect. Nitrates, which should not be combined with tadalafil because the blood-pressure drop can be dangerous. If dizziness is severe, causes fainting, or occurs with chest pain, seek urgent medical attention.