Best value for money One daily dose (2 capsules) provides you with 400 mg of natural vitamin C from 880 mg acerola extract and 360 mg rosehip extract. This high-quality natural vitamin C is rich in natural bioflavonoids and highly bioavailable. Our complex combines two natural sources of vitamin C, making it particularly easy for the body to absorb. Nervous and immune system, collagen formation Vitamin C contributes to the normal function of the immune system during and after intense physical activity. Vitamin C contributes to normal collagen formation for the normal function of skin, teeth, bones, and cartilage. Furthermore, vitamin C contributes to normal energy-yielding metabolism and to the reduction of tiredness and fatigue. Vitamin C helps protect cells from oxidative stress. (These are functions listed by the European Food Safety Authority (EFSA) as effects of vitamin C considered safe for humans.)