Willow, like meadowsweet, is a source of natural aspirin-like compounds collectively known as salicins.
The "aspirin-like" compounds noted above
contained in Meadowsweet and Willow extracts are various salicin
compounds. They have been shown to exert physiologic action similar to
ASA without the adverse side effects or allergic responses that ASA
often elicits.
To summarize the herbal action of Panitrol,
pain, swelling, and inflammation are reduced by reducing transmission to
the CNS, interfering with the action of what’s there and blocking
production of more, and helping the body get rid of the rest through
increased diuresis.