Take the cellular nutrient formulas with plenty of liquid (e.g., water, juice, tea) at regular intervals throughout the day and at mealtimes. This ensures a constant blood concentration and uniform optimum absorption of the ingredient by the body, as well as better absorption of the fat-soluble vitamins E and D and also the beta-carotenes. A further positive effect is that vitamin C improves the absorption of various substances contained in the diet, for instance iron. Because of this, most of the cellular nutrient formulas do not contain additional iron. If you are taking several formulas each day you may also take some of the tablets between meals.