The "Clueless" actress hopes women that are unable to produce enough breast milk on their own will be able to utilize the program, called the Kind Mama Milk Share.
The program aims to connect mothers who "recognize the importance of food as health."
Silverstone cites a friend of hers that could not make enough milk for her son after having a breast reduction surgery.
"She'd tried to do everything so that this baby would have the healthiest, happiest start in life -- she nourished herself during pregnancy with clean, kind foods; had a beautiful home birth; and planned to breastfeed from now until her son could say, 'No thanks.'"
With that in mind, Silverstone started the share. For the program to work, participants must be screened to ensure their milk is clean and healthy. Silverstone has already gotten several potential donors.
This isn't the first time Silverstone's parenting practices have gone public. In 2012, Silverstone revealed on YouTube that she pre-chewed food for her son, Bear.
Jimmy Fallon referred to the practice as "Silverstoning" on his show, where he challenged his audience to try it for their own children.