“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.

The rebate allays fears of a 170% price rise but patients are warned the cost of the drug will still jump.

The claims from pharmaceutical giant Novartis comes amid a row over drug pricing deals.

The drug's US manufacturer has asked UK distributors to stop taking orders from pharmacies until next month's price increase.

The target set by the Department of Health for patients red flagged for breast cancer to be assessed is 14 days.