Dr. Grandel Cerolettes 100 lozenges100 mg vitamin C to suck. Vitamin C contributes to a functioning immune system and nervous system, to protecting cell components from oxidative damage, to normal energy metabolism and can help reduce tiredness and fatigue. Above all, a good supply of vitamin C should be ensured: in wet and cold weather when tired during physical exertion Acerola fruit powder and selected berry and fruit extracts give the Cerolettes their inimitable aromatic taste.