Health food stores are a fairly recent introduction to Taiwan. They are not necessarily similiar to ones in Europe or North America, they are a local version, unique in their own way. They do sell organic produce and some products from Europe and N.A., mostly things like apple cidar vinegar (which is part of the popular vinegar fad diet here). Herbs and vitamins? Hmmm, virtually non-existant. Chinese herbs, but not much Western herbs. There is the evil corporate GNC here but the herbs and vitamins run about 20-30 USD and, of course, the selection is limited. I would suggest buying what you need before you come and then have friends send you things as you run out. Now, my wife just buys bulk herbs over the net and makes tinctures and decoctions for our use.