Nuvacal tube-feeding formulas combine familiar food ingredients with carefully selected nutrients. Nuvacal 1.3 contains ingredients including soya beans, green peas and raisins, while Nuvacal 1.6 contains ingredients including raisins and courgette. Both formulas also contain proteins, oils, added fibres, vitamins and minerals. The exact composition varies by product, providing different options for different nutritional needs.