Klaire Labs Buffered Vitamin C with Quercetin & L-Glutathione – 250 Hypoallergenic Capsules

What makes this buffered Vitamin C unique?

Most vitamin C supplements contain pure ascorbic acid, which can be irritating for those with sensitive stomachs. This Klaire Labs formula combines calcium, magnesium, and potassium ascorbates to create a buffered vitamin C, with a more neutral pH and much gentler on the digestive system. In addition, it incorporates quercetin – a powerful bioflavonoid – and reduced L-glutathione, a key antioxidant that helps regenerate vitamin C and enhance its function.* The result is a complete, hypoallergenic supplement free of the most common allergens, developed with people with specific needs in mind.

Benefits of vitamin C (according to the EFSA)

Vitamin C is an essential nutrient with well-documented functions. According to the European Food Safety Authority (EFSA), vitamin C contributes to the normal functioning of the immune system and the protection of cells from oxidative damage. It also promotes normal collagen formation for the maintenance of bones, cartilage, gums, skin, and teeth. This formula is designed to effectively support these physiological processes, thanks to its synergistic ingredient profile.

Key ingredients and their functions

Each capsule provides a strategic combination of nutrients:

• Vitamin C (as calcium, magnesium, and potassium ascorbates): buffered form that minimizes acidity and improves digestive tolerance.
• Zinc, manganese, and copper: trace minerals in forms well utilized by the body, which participate in numerous enzymatic reactions and contribute to antioxidant metabolism.
• Quercetin: bioflavonoid with antioxidant properties that helps modulate the immune response and maintain cell integrity.
• Reduced L-glutathione: considered the main intracellular antioxidant, it protects cells from oxidative stress and recycles other antioxidants such as vitamin C.

All ingredients are carefully selected to ensure purity and bioavailability. The product is hypoallergenic: free of dairy, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soy. It contains no artificial colors, flavors, or preservatives.

How to choose the best vitamin C for sensitive stomachs?

If you have experienced gastric discomfort with other forms of vitamin C, buffered versions are your best option. By binding ascorbic acid to alkaline minerals, acidity is reduced and irritation is avoided. Additionally, the inclusion of bioflavonoids such as quercetin can improve absorption and enhance antioxidant effects. Klaire Labs has been developing formulas endorsed by healthcare professionals since 1969, ensuring a standard of quality and safety.

Recommended dose and method of use

This product is intended for use under the guidance of a healthcare professional. The usual dose may vary according to individual needs. It is recommended to consult a doctor or nutritionist to determine the appropriate amount. In general, buffered vitamin C supplements are taken with meals to minimize any possible discomfort. Store in a cool, dry place, and keep out of reach of children.

Frequently asked questions

Is this product suitable for vegetarians/vegans? The available information does not specify the origin of the capsule. It is recommended to contact the manufacturer for confirmation.

Does it contain gluten or dairy? No. It is formulated free of the most common allergens, including gluten and dairy.

Can I take it with other medications? Consult your healthcare professional, as vitamin C and other components may interact with certain drugs.

How long does a container last? With 250 capsules and a suggested dose of 2-4 capsules per day, the duration will depend on the regimen indicated by your specialist.

Food supplements should not be used as a substitute for a balanced diet. Do not exceed the recommended daily dose. Keep out of reach of small children.