Parts of White willow Used as a Medicinal Herb and How They are Used.
The bark is the part used for medicinal purposed. It is stripped from young branches and used as fresh or dried. White willow bark can be made into a tincture. To treat rheumatism take 4 dropperfuls of willow bark with water three times a day.
One can also make a decoction of white willow, st John's wort and cramp bark to treat aching muscles and rheumatic muscles. For this you need to take at least one cup of this decoction three times a day.
There also white willow tablets and capsules that yo can purchase as shown in this post from suppliers such as Nature's Way.