Scientific research has shown botanicals such as olive leaf extract, Andrographis and black elderberry may offer potential immune support.

Mounting scientific research has evaluated the potential of various botanicals for immune health, often validating traditional uses in the process.

Preclinical studies have shed light on the mechanisms of olive leaf’s (Olea europaea) traditional use in lowering fever while further validating its antiviral potential for combating the flu.Olive leaf extract (as Isenolic from Pharmactive Biotech Products) was as effective as the standard pharmaceutical treatment. Similar to black elderberry, the mechanisms involve inhibiting the neuraminidase enzyme, which ultimately prevents spreading.