“We were at the edge of divorce when I decided to try this. Years and years without delight of orgasm and sexual satisfaction. This could ruin any life but not ours. Viagra worked and I always keep the pill near my bed as nobody knows when my wife asks ...

I have received the order and will be playing another shortly.

Researchers say the nutrient may be an "elixir of life" but warn against buying it until more research is done.

NHS England says the drugs will only be prescribed for those signed up to a clinical research programme.

Staff shortages are driving up waiting times in all four UK nations, the Royal College of Radiologists says.

Strike action by Unite union members is announced in an ongoing dispute over pay.