date:Oct 17, 2013
established cold in four variations: Pycnogenol alone; Pycnogenol + vitamin C; Pycnogenol + Gluconate Zn (zinc compound) and a trio combining all three. These groups were compared to each other and to a control group only using leading over-the-counter (OTC) cough and cold products.
The study focused on two phases. The first phase followed 73 healthy volunteers with no history of serious illness. At the first sign of a cold, 40 subjects supplemented with 50mg of Pycnogenol two times daily while