The Vitamin Shoppe Quercetin + C | Deep-Dive Guide

the vitamin shoppe quercetin + c delivers 1,000 mg of Vitamin C (as ascorbic acid) alongside 50 mg of Rose hips in every tablet. Vitamin C is an essential water-soluble nutrient that the body cannot store, so a reliable daily supply—whether through diet or supplementation—is critical for maintaining optimal health.

Because Vitamin C is a critical component of both basic body-building functions and disease prevention, it is needed for the growth and repair of tissues in all parts of the body. This formula is designed to provide antioxidant defense, support immune system function, and promote skin elasticity and collagen production.

This product is gluten free, dairy free, soy free, and grain free, making it accessible to individuals with common dietary sensitivities.

Vitamin C functions as one of the body's primary water-soluble antioxidants, scavenging reactive oxygen species (ROS) in aqueous cellular compartments and plasma. Research suggests it can also regenerate the antioxidant form of vitamin E, amplifying the body's overall defense against oxidative stress. Beyond antioxidant activity, Vitamin C is an essential cofactor for prolyl hydroxylase and lysyl hydroxylase—the enzymes responsible for stabilizing collagen's triple-helix structure throughout the body.

Vitamin C is also an immune system booster that increases white blood cell production. It contributes to immune defense by supporting various cellular functions of both the innate and adaptive immune system, including epithelial barrier function, phagocytosis, and the differentiation and proliferation of B cells and T cells.

Rose hips complement this formula by providing additional naturally occurring antioxidants—including polyphenols, carotenoids, flavonoids, and the galactolipid GOPO. Research suggests that GOPO may help downregulate MMP-1 (an enzyme that breaks down collagen) while upregulating genes responsible for collagen synthesis. Rose hips have been used for more than 2,000 years, with ancient Chinese, Greek, Roman, and Persian traditions incorporating them into health remedies.

The formula also provides an antioxidant required for over 300 metabolic functions in the body, including carnitine synthesis, production of adrenal steroids and catecholamines, metabolism of amino acids and cholesterol, and iron absorption from plant-based foods.

the vitamin shoppe quercetin + c may be a good fit for adults looking to support their daily immune function, promote healthy skin and collagen production, or strengthen their body's antioxidant defenses. Vitamin C is vital for helping the body heal after injury or surgery, and the body uses large amounts of it during any kind of healing process, whether from infection, injury, disease, or surgery.

This formula is also relevant for individuals who may not consistently get enough Vitamin C from diet alone. The body cannot synthesize Vitamin C due to mutations in the L-gulonolactone oxidase gene, making dietary or supplemental intake essential. Some 70 to 90 percent of usual dietary intakes (30 to 180 mg/day) are absorbed, but absorption falls to about 50 percent or less with increasing doses above 1 g/day.

It is important for tissue growth and repair, adrenal gland function, and healthy gum support. It also helps protect against harmful effects of pollution and may enhance the immune system. Those concerned about non-heme iron absorption may also benefit, as Vitamin C promotes iron uptake from plant-based foods.

Take one (1) tablet, one (1) to three (3) times daily with meals, or as directed by a health care professional. Store in a cool, dry place and away from direct light.

Each tablet delivers a full 1,000 mg of Vitamin C (as ascorbic acid) plus 50 mg of Rose hips. The product contains 100 tablets per bottle, with a serving size of 1 tablet.

Because Vitamin C is water soluble and cannot be stored by the body, consistent daily intake is important for maintaining adequate levels. The Tolerable Upper Intake Level (UL) established by the Institute of Medicine for adults is 2,000 mg per day. Amounts greater than that are not recommended, as high doses can lead to gastrointestinal upset or diarrhea.