Vidalista 80 mg through reliable medicine-information websites and a doctor or pharmacist. The key concern is that 80 mg is much higher than the usual tadalafil dose for erectile dysfunction. Where to find reliable information NHS — Tadalafil safety, side effects and interactions . NHS electronic Medicines Compendium (emc) — Official tadalafil 20 mg prescribing information . This covers recommended dosing, contraindications and precautions. 10233 Your pharmacist or prescribing doctor — Ask them to verify the ingredients and strength on your Vidalista 80 packaging, since the brand name alone does not establish product quality. Important safety points For erectile dysfunction, the usual tadalafil dose is 10 mg as needed, sometimes increased to 20 mg maximum per dose, generally no more than once daily. 10233 Do not take Vidalista 80 without medical advice. Never combine tadalafil with nitrate medicines or recreational nitrites (“poppers”); the combination can cause a dangerous drop in blood pressure. If you have already taken 80 mg, seek prompt medical advice, even if you feel well. If you develop chest pain, fainting, severe dizziness or an erection lasting more than four hours, seek emergency care. One important question: Have you already taken Vidalista 80 mg, or are you researching its safety before taking it? I can tailor the guidance accordingly.