The law defines a medicine as something used in disease, whether it is used to prevent, treat or diagnose it, in anesthesia, investigating conditions or interfering with the normal operation of the body. It does not include such things as contact lens fluids, food supplements and cosmetics.

Many factors are considered in deciding whether a product is actually a medicine such as what it contains, what it’s advertised or used  for, the way it will be used, any particular targeting of the marketing information and what the promotional literature says. Claims that a product “supports” health or a healthy lifestyle is not usually considered as medicinal.