Japanese Knotweed (Polygonum cuspidatum) has a wide range of actions.

It is a long list, but worth citing here: antibacterial, antiviral, antischistosomal, antispirochetal, antifungal, immunostimulant, immunomodulant, anti-inflammatory, antioxidant, antiatherosclerotic, antihyperlipidemic, antimutagenic, anticarcinogenic, antineoplastic, vasodilator, inhibits platelet aggregation, inhibits eicosanoid synthesis, antithrombotic, tyrosine kinase inhibitor, oncogene inhibitor, antipyretic, cardioprotective, analgesic, antiulcer (slightly reduces stomach acid and protects against stress ulcers), hemostatic, and astringent.