Provexis, the AIM-listed developer of functional and medical foods, shed 18p to 8½p, despite word that it is in talks to license its Fruitflow technology to Nestlé, the Swiss foodmaker. This month Provexis launched Sirco, its heart health drink, in Britain, its first product to utililise the patented Fruitflow system, which the company claims reduces the risk of heart attacks and strokes.