Going easy on the alcohol: A lot of alcohol mixed with Viagra can lead to a dangerous drop in blood pressure and other side effects. A few more candles, a little less champagne — and who knows what could happen… FAQs Is it safe to take Viagra? While we’ve ensured that everything you read on the Health Centre is medically reviewed and approved, information presented here is not intended to be a substitute for professional medical advice, diagnosis, or treatment. How can I maximise the effects of Viagra? It is completely safe to take Viagra or Sildenafil provided you are male and over, and have been prescribed it for erectile dysfunction. You should not use erectile dysfunction medicate recreationally, or if you have not been diagnosed with erectile dysfunction.Viagra tablets are available in three strengths: 25 milligrams (mg) 50 mg mg Typical dosages The following information describes commonly recommended dosages for ED. . Lemonaid Sildenafil Best price for generic Viagra when bought in bulk: Optum Store Sildenafil If you are experiencing the symptoms of erectile dysfunction (ED), you may . When taking Viagra for erectile dysfunction, take one 50mg tablet about 1 hour before sex. The effects usually last for 4 hours, and will only start to work once you’re sexually .