After three failed cycles of in vitro fertilization and a miscarriage, Yvonne Finlayson turned to Viagra as a method of fertility treatment, London’s Daily Mail reported.

The drug is most commonly used to treat erectile dysfunction, but it worked for Finlayson and her husband Mark Ruston — they gave birth to twins Lewis and Ava.

“It is really amazing that using Viagra for a medical treatment has allowed me to give birth to my beautiful twins,” Finlayson, 36, told the newspaper.

A fertility clinic at the Monklands Hospital in England found that Finlayson had a thin womb lining. Doctors told her it was unlikely eggs would be able to successfully implant inside the womb.

That was in 2004. Over the next two years, Finlayson tried IVF, but when that failed, she was about to give up hope.

Then the couple flew to the United States in the summer of 2006 to meet with doctors at the Sher Institute of Reproduction in Los Angeles. Doctors at Sher believed Viagra might thicken the lining of her womb.

“I was willing to try anything – I just had to put my trust in the doctors,” Finlayson said. “But I wasn’t very hopeful that it would work at all.”

It was only 10 days after returning to England that Finlayson found out she was pregnant. The Viagra worked by increasing blood flow to the uterus.

“It has cost us a lot, and we had to go to America to get them, but it has been worth every penny to get our twins,” Finlayson said.

Click here to see pictures of the twins and to read more at the Daily Mail.