Bioflavonoids are plant compounds that give plants their colour and are found mostly in fruits, vegetables and certain tree barks. Previously known collectively as vitamin P, the bioflavonoids include a number of vitamin C-like components that work together - citrin, rutin, flavonols, catechin, proanthocyanidins, polyphenols and quercetin are a few of the more common ones. As a class, bioflavonoids are powerful antioxidants which help protect our bodies from harmful free radicals. They also have antiviral, anticancer and antiallergenic actions. The main use of the bioflavonoids would be to provide synergy in the utilisation of vitamin C - they therefore contribute to many vitamin C applications, for example, the treatment of colds and flu's.

Plant hormones are chemical messengers that affect a plant's ability to respond to its environment. Hormones are organic compounds that are effective at very low concentration; they are usually synthesized in one part of the plant and are transported to another location. They interact with specific target tissues to cause physiological responses, such as growth or fruit ripening. Each response is often the result of two or more hormones acting together. Because hormones stimulate or inhibit plant growth, many botanists also refer to them as plant growth regulators. Many hormones can be synthesized in the laboratory, increasing the quantity of hormones available for commercial applications. Botanists recognize five major groups of hormones: auxins, gibberellins, ethylene, cytokinins, and abscisic acid.