Cooking rosehip tea. Rosehips contain a large amount of vitamins, especially vitamin C and vitamins P and K, flavonoids, carotenoids, tannins, pectins. They have a general strengthening effect, stimulate the body's resistance to harmful effects, accelerate tissue regeneration, reduce vascular permeability, have a positive effect on carbohydrate and mineral metabolism, and have anti-inflammatory properties. Strengthen humoral and cellular immunity.