Personal advice to buy ZhengGuanZhuang Goryeo ginseng, these 'ZhengShanZhuang' ah 'ZhengGongZhuang' ah, all 'imitation' ZhengGuanZhuang. As for the Zhengguanzhuang is how the enterprise you can go to Baidu.
It is recommended to buy Zhengguanzhuang red ginseng essence (cream), the absorption effect is fast. A good red ginseng product will not conflict with any food, including radish. If you are taking other medications, you should ask your doctor if you can eat with red ginseng, if you are not taking medications, you can feel free to eat.
But as a reminder, the amount of a day, not too much, and this kind of thing to buy on the buy good, do not for cheaper to buy some 'imitation' brand.