Rosehips Extract (Aqueous) Vitamin C & Bio-flavonoids. Rose-hips have a higher proportion of vitamin C than any other commonly available fruit or vegetable, and provide one of the most freely available sources of this vitamin. There is as much vitamin C in a cup of rose-hip pulp as in 40 oranges. Vitamins A, B1-3 and K are also present. Bio-flavonoids, present in the pulp and the rind of the fruits, exert a synergistic action to Vitamin C, facilitating its absorption by the organism.