[The evolution of commercial enteral formulas in Spain in 1988-1991]. / Evolución de las fórmulas enterales comercializadas en España en el período 1988-1991.

Enteral nutrition is an artificial form of nutrition which is expanding an there are thus a great many commercial preparations on the market which are rapidly being developed. This study is a presentation of the quantitative and qualitative changes in these preparations from 1988-1991, classified depending upon their main nutrient: proteins. In global terms, there has been an increase of 18 formulae, distributed among different types, but with the most spectacular increase in special diets. Discussion of the trends observed, which respond to further knowledge on the absorption or tolerance of nutrients and nutritional needs in different pathologies.