Heart disease kills a half a million people year. Now toddlers -- even infants are being treated for it, and some with a very grown-up drug. Viagra was first studied as a heart medication and doctors are now getting back to its roots in the young population increasingly affected by a dangerous condition. Robyn Haines has more in Healthy Living.

The little blue pill known to help erectile dysfunction is now helping treat pulmonary hypertension – where lack of oxygen causes someone to pass out. Typically the only options are heart and lung transplants, but doctors use Viagra to open up the vessels.

Now, even newborns can be put on Viagra. The risks include blindness, liver damage and upset stomach. It looks a little different than the little blue pill and parents are skeptical at first about giving Viagra to their child. This is not a cure, but a treatment to bridge the gap for children until one is found.

Children who take Viagra will typically need to stay on it for their entire life. Doctor Swift believes the cure for pulmonary hypertension will involve gene therapy, where the gene that causes hypertension will be turned off in children with the condition.