I have been taking this, White Willow Bark Extract 500mg. for quite a few years, it works for me every time I have taken it, it never fails to do exactly, what I take it for. I recommend this to anyone who has a need for it, as I do. Be certain to always order the Standardized, to insure you are getting the proper amount of salicin that is in the bark, like this one does. Otherwise it may not work as well for you.I do not usually follow the label directions. I take it differently than this. Read as much as you can on this herb and what it can help you with. You will learn this is one of the best herbs you can take for the purpose you will be taking it for. You will also learn on your own, how often to take it and how much you should take, in order for it to be effective for you.The quality of this product is excellent as I have rated it, the service that Swanson has given to me has always been the same. I order from them for their prices as much as I have for their quality. Not to mention, I can order nearly anything I would buy elsewhere from them too, not just their brands alone.