Vidalista can cause side effects. It contains tadalafil, a medicine used to treat erectile dysfunction (ED). It works by increasing blood flow to the ***** during ***** stimulation. Common side effects Headache Facial flushing or warmth Indigestion or heartburn Stuffy nose Back pain or muscle aches Dizziness These effects are often mild, but they can vary depending on the dose and your health. Serious side effects to watch for Seek emergency medical help if you experience: Chest pain or fainting. Sudden loss of vision or hearing. An erection lasting longer than four hours. Severe allergic symptoms, such as difficulty breathing or swelling of the face. NHS +1 Important: Never take Vidalista with nitrate medicines such as nitroglycerin, and do not combine it with other erectile dysfunction medicines such as Cenforce or Filitra. Alcohol can increase dizziness and low blood pressure. Which Vidalista strength are you asking about — 5 mg, 10 mg, 20 mg, or 40 mg? The risks can differ considerably by dose.