Tadalista Professional is marketed as a tadalafil medicine for erectile dysfunction (ED). If your product contains tadalafil, the timing depends on the prescribed dose and formulation. When to take it: Standard tadalafil taken as needed is usually taken at least 30 minutes before sexual activity. How long it works: Its effects may last up to 36 hours, although this varies by person. Food: Standard tadalafil can Tadalista Professional be taken with or without food. Sexual stimulation: It helps with erections when you are sexually aroused; it does not cause a continuous erection. Important safety precautions Do not take tadalafil with nitrate medicines such as nitroglycerin. Do not combine Tadalista Professional with Vidalista, Cialis, or other erectile dysfunction medicines unless your doctor directs you to. Do not take extra doses if it does not work immediately. If you have diabetes, heart disease, or low blood pressure, consult your doctor before using it. A question to clarify: Does your Tadalista Professional package say 20 mg, and is it a tablet intended to dissolve under the tongue? This matters because the exact formulation and instructions can vary.