Yes, Tadalista 20mg, which contains tadalafil, can cause dizziness as a potential side effect. Tadalafil is a medication primarily used to treat erectile dysfunction and pulmonary arterial hypertension. While not everyone experiences dizziness, it can occur due to the drug’s effects on blood pressure. Tadalafil works by relaxing blood vessels and improving blood flow, which can lead to a drop in blood pressure. This decrease in blood pressure may result in dizziness, lightheadedness, or even fainting, particularly when standing up quickly. If dizziness becomes severe or persistent, it’s important to consult a healthcare provider.