“It is not fair that everybody knows about Viagra, Levitra worked perfectly for me and moreover it is less expensive and easier to find. I almost have not experienced any side effects, at least those severe to make sex impossible. Works like a charm.”

“I did not want to confess my sexual fail and intimacy problems. After taking it my penis worked as a paving breaker and my wife had no reason to complain during whole night. We hooked on it and purchase with a discount.”

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.