The inner bark of the willow tree contains salicin, which is closely related to the active ingredient in aspirin.
People who are allergic or sensitive to salicylates such as aspirin should not use willow bark.
Step 1: Find a willow tree
Find a tree in the willow family. Examples include quaking aspens, bigtooth aspens, white willows, black willows, crack willows, purple willows, and weeping willows.
Step 2: Remove bark
Cut into the tree’s bark, strip it off, and isolate the inner bark. In spring and summer, the bark can be removed in long continuous strips.
If you cannot peel the bark off, scrape off the inner and outer bark using the edge of a sharp knife.
Step 3: Make a tea
Simmer 2 teaspoons of the inner bark in a cup of water for 10 minutes. Let it cool before drinking.
If you cannot make a tea, an option is to chew on the bark.
Step 4: Avoid overdosing
Drink no more than 4 cups of this tea each day. Overdosing has been known to occur.