viagra for Men
Generic Viagra also available Lower cost generic Viagra, called sildenafil, has been available since Viagra's patent expired in the UK in June 2013. Sildenafil citrate is the medical name of the active ingredient in Viagra. Sildenafil is much cheaper from 71p per tablet - branded Viagra cost £5. They contain the same medicine. Viagra is a prescription-only medicine used to treat erectile dysfunction (ED) in men. 'Viagra' is a brand name, the active ingredient is 'sildenafil'. Starting dose is one 50mg tablet in 24 hours. Depending on results, adjust to 25mg or 100mg. Take 30-60 minutes before sexual activity, usually lasts for 4 hours. Read the patient leaflet for a full list of side effects, cautions, and interactions with other drugs. Large meals, fatty food, alcohol, and grapefruit can affect efficacy. Patent expired 2013 in the UK - cheaper generic sildenafil available. How does Viagra work? Viagra works by increasing blood flow to the penis which helps men ge...