Higenamine is a molecule derived from a variety of fruits and plants that appears to have anti-asthmatic properties via dilating the bronchial tubes (a mechanism known as Beta(2)adrenergic agonism). This mechanism is also the same one underlying the fat burning potential of ephedrine, and as such Higenamine is currently being used as a fat burner.
Currently, there is no human evidence using Higenamine and it appears to be similarly potent to some established beta(2)adrenergic agonists in preliminary studies (in regards to anti-asthmatic effects).
Beyond that mechanism, it may also exert anti-inflammatory effects and injections may be useful in a clinical setting against sepsis.
Higenamine is on the FDA's Dietary Supplement Ingredient Advisory List as of April, 2019. These are ingredients that do not appear to be lawful ingredients in dietary supplements. The list is subject to change (check the provided link for current status).