The trials involve men receiving a testosterone implant, then taking a daily pill of the hormone desogestrel, a component of the female Pill. Testosterone can suppress sperm production in very high doses, but the use of the other hormone means smaller doses can be used.
The results of the Scottish trials will be presented tomoorrow at the annual meeting in Edinburgh of the European Society of Human Reproduction and Embryology.
The work was carried out at Edinburgh University's Centre for Reproductive Biology, and similar research into male contraception is also being carried out at Manchester University.
Professor David Baird, of the Edinburgh centre, said: "I think it is technically possible, and I think if it is marketed some men and some couples will use it.
"But how long that will take will depend on whether pharmaceutical companies make the decision to take this sort of combination for product development."Reuse content