Tadalista 20 mg should be used after consulting a doctor, particularly if you are taking it for the first time. Tadalista commonly contains tadalafil, a medicine used to treat erectile dysfunction (ED). Why is a doctor's consultation important? Correct dosage: Tadalafil 20 mg is generally an as-needed dose for ED, but it may not be appropriate for everyone. Heart and blood pressure safety: Your doctor can assess whether sexual activity and the medicine are safe for you. Drug interactions: Tadalafil must not be taken with nitrate medicines, such as nitroglycerin, or with riociguat because they can cause a dangerous drop in blood pressure. Tadalista 20 mg medical conditions: Kidney or liver disease and certain heart or eye conditions may affect whether you can safely use it. Side effects: Headache, flushing, indigestion, back pain, and dizziness are possible. Important precautions Do not take more than one as-needed dose in 24 hours unless your doctor gives you a different specific regimen. Do not combine Tadalista with Viagra, Vilitra, or other erectile dysfunction medicines without medical advice. Obtain the medicine from a reputable pharmacy and verify its ingredients and authenticity. Seek emergency medical care for sudden hearing or vision loss, chest pain, or an erection lasting more than four hours. Can I ask your age and whether you have used any erectile dysfunction medicine before? I can then explain the precautions that are most relevant to you.