Sister's illness leads to a sweet idea

College students have developed a new stevia formulation and now they are marketing the product through their own company.
Sister's illness leads to a sweet idea Lynchburg News Advance

Growing Stevia Hydroponically

The article linked below speaks of growing stevia hydroponically. Apparently it thrives when cultivated this way. It might be a viable alternative for commercial production of stevia.
Maximum Yield - Indoor Gardening