Old men could soon be getting a new lift in the bedroom.

Scientists at Imperial College London are working on a study that shows men who are struggling with their sex lives could soon take a dose of hormone that drives the urges of teenage boys.

Scientists used the hormone kisspeptin, a.k.a. “Mental Viagra” which turns on sexual desire in males. In the study, scientists used 29 young heterosexual men and gave them injections of the hormone. They then gave the subjects two sets of images, one with sexual and non-sexual romantic pictures of couples.

Researchers saw the volunteers had “enhanced activity” in the the part of the brain that’s activated by romance and arousal when they looked at the sexual photos but not when they looked at the non-sexual images.

Professor Waljit Dhillo, the lead author of the research from the Department of Medicine at Imperial College London was happy with the study’s initial findings.

“Ultimately, we are keen to look into whether kisspeptin could be an effective treatment for psychosexual disorders, and potentially help countless couples who struggle to conceive,” Dhillo said.

Dhillo said the hormone can be found inside all people and is safe to use.

Dr. Alexander Comninos, the first author of the study from the department of Medicine at Imperial believes there’s an “interesting possibility” that this hormone could be used in treating psychosexual disorders and depression. However, they’ll need further testing to be sure.