This formula is high potency and is a great alternative for persons that are looking for a high potency source of Vitamin C. In 1936, Albert Szent-Gyorgi discovered that vitamin C works better in combination with other nutrients, such as bioflavonoids. In other words, he found evidence to support the fact that vitamin C should be considered a complex rather than a single nutrient, much like the vitamin B complex. Rose hips is the richest herbal source of Vitamin C and contains the entire C complex. Our Vitamin C with Rose Hips 1000 mg is available in 50 and 100 count vegetarian tablets.