These regulations concern the sale of food supplements which are sold as food and presented as such. A food supplement is defined as a food sold in dose form whose purpose is to supplement the normal diet and which is a concentrated source of a vitamin or other substance with a nutritional or physiological effect. With effect from 1 August 2005, the regulations prohibit the sale of a food supplement... to the final consumer unless it is prepacked;... in the manufacture of which a vitamin or mineral has been used, unless certain compositional requirements are met;... which is ready for delivery to the ultimate consumer or a catering establishment unless certain requirements as to labelling, presentation and advertising of the product are met.