The recommended daily intake of vitamin C can vary depending on age, gender, and certain lifestyle factors. The German Nutrition Society (DGE) recommends 110 mg per day for healthy adult men and about 95 mg per day for healthy adult women. Pregnant and breastfeeding women have an increased requirement of 105 mg to 125 mg per day.
Requirements also increase in cases of infection, competitive sports, trauma, or in older age. Some nutritionists recommend taking 200 mg of vitamin C per day or more to achieve adequate plasma vitamin C levels (Gröber, Micronutrients – Metabolic Tuning, Prevention, Therapy; 3rd edition). Thanks to the liposomal formulation in Pro Vitamin C Ultra, effective plasma vitamin C levels can be achieved with just two capsules in the morning and two capsules in the evening, lasting up to 24 hours.