Viagra Connect is the first erectile dysfunction medicine in the UK to be sold without the need for a prescription, which means you can order Viagra Connect discreetly online or .It will be available in pharmacy and online from Boots exclusively for a two-week period, prior to being made available from wider pharmacies. You can take the tablet either before or after food but, if you have just eaten a large meal, it may take longer for it to work. If this happens, it can put you at serious risk of adverse side effects. Talk to your doctor if you think you might use any recreational drugs with sildenafil. Viagra is possibly the most well-known and popular erectile dysfunction medication in the world.About sildenafil. Who can and cannot take it. How and where to get it. How and when to take it. Side effects. Pregnancy, breastfeeding and fertility. Taking sildenafil with other . Viagra (branded Sildenafil) The original brand that’s effective for % of men Works in 1hr and lasts hrs 25mg 50mg mg Subscription (save 15%) 4 tablets £ / . Viagra, and other ED medicines, work by inhibiting the effect of PDE-5 thus increasing the blood flow to the penis and making it easy to gain and maintain an erection. For Viagra .Do not take it more than once a day. The table below contains some of the most common ones associated with sildenafil. It can also be dangerous to take sildenafil with: stimulants like MDMA ecstasy or cocaine hallucinogens like LSD novel psychoactive substances which used to be known as legal highs like mephedrone Sildenafil has not been properly tested with recreational drugs. Share this article. Or, to avoid the brand name, the drug Sildenafil Citrate. Schneider, Alfons G.