It is a combination of two medicines – lidocaine and prolocaine – both of which are anaesthetic drugs.
One dose – three sprays – are applied directly to the penis before intercourse.
It works by decreasing the sensitivity of the head of the penis, to increase the amount of time before ejaculation.
The spray takes effect almost immediately upon application, giving users more control without reducing pleasure, its makers claim.
Tests showed that more than 85 per cent of men were able to last longer between the sheets with a delayed ejaculation time of greater than one minute after using the spray.