Thorne’s D-5,000 contains 5,000 IU of high-quality vitamin D3 and is NSF Certified for Sport®. Although it is well known that direct sunlight is a natural source of vitamin D, many individuals, especially the elderly, don’t get enough vitamin D from sunlight or from their diet. Be sure you get the vitamin D your body needs with Thorne’s easily absorbed Vitamin D-5,000.

Benefits of Thorne’s Vitamin D-5000: 

• Supports healthy teeth and bones*
• Promotes lean muscle mass and helps maintain muscle strength*
• Enhances the absorption and retention of calcium*
• Supports healthy brain function*
• Promotes cardiovascular health and immune function*
• Formulated with vitamin D3, a more potent and better absorbed form than vitamin D2
• Thorne’s vitamin D contains no lactose and no preservatives like BHT, BHA, sodium benzoate, and sorbic acid

You could be at a higher risk of a vitamin D deficiency if you:

• Rarely go outdoors, live in the northern latitudes, or have a darker skin tone
• Have limited sun exposure due to your occupation, clothing choices, or engage in indoor athletics rather than outdoor sports
• Regularly wear sunscreen with an SPF greater than 8
• Are an older adult (the risk of a deficiency increases with age beginning at age 50)
• Have a chronic health condition, such as a bowel disease or a surgical procedure (like gastric bypass) that decreases fat absorption
• Are obese

The optimal amount of vitamin D for an individual depends on many factors and varies from person to person. Therefore, the requirement for vitamin D supplementation should be individualized. Either of Thorne’s D-1,000 or D-5,000 can be an ideal way to maintain an optimal level of vitamin D in healthy individuals.*

Because an athlete needs to know that his or her supplements are trustworthy and compliant, every batch of an NSF Certified for Sport® product is tested for compliance with label claims and to ensure the absence of more than 200 substances banned by many major athletic organizations, including stimulants, narcotics, steroids, diuretics, beta-2 agonists, and masking agents.

Quercetin is a bioflavonoid that supports cellular health, endothelial health, and healthy immune function. Optimized Quercetin delivers 250 mg of standardized quercetin in a bioavailable super food blend, as well as vitamin C and camu-camu berry extract to further support a healthy immune response and more.

Benefits at a Glance

• Promotes cellular health and DNA function
• Supports healthy seasonal immune response
• Encourages healthy endothelial integrity
• Supports already-healthy blood glucose levels
• Promotes cholesterol levels already within normal range

Quercetin is a bioflavonoid found in red grape skins, red onions, apples, buckwheat, and other food sources. Quercetin supports healthy cellular function, cardiovascular health, and has also been shown to encourage a healthy immune response — especially to seasonally changing environments.

Supports cardiovascular and endothelial health

Quercetin promotes cardiovascular health by protecting the integrity of your vascular endothelium. One way quercetin does this is by encouraging healthy levels of nitric oxide: which supports healthy blood pressure levels already within the normal range.

This unique phytonutrient also supports healthy cholesterol levels already within normal range. Quercetin also helps reduce oxidative stress, promotes a healthy inflammatory response in blood vessel walls as a result of healthy gene expression, and supports healthy blood glucose levels already within normal range.

Promotes a healthy immune response

In human cell culture studies, quercetin has been shown to block the manufacture and release of inflammation-causing substances, which can help support a healthy immune response, especially to seasonally changing environments. And our Optimized Quercetin blend also contains vitamin C and camu-camu berry extract to further promote healthy immune function.

Although you might rely on vitamin C only during the winter months, this vitamin can support your overall health every day. Vitamin C has many roles in your body and is linked to impressive health benefits, including immune function, collagen formation, and supporting liver detoxification.*

Because vitamin C is a vitamin that the body can’t produce, it must be obtained from the diet or by supplementation.

Thorne’s Vitamin C with Flavonoids contains ascorbic acid and naturally occurring citrus flavonoids. The flavonoids provide greater antioxidant capacity than Vitamin C does alone, thus better scavenging free radicals within the body.*

 Benefits of Vitamin C with Flavonoids:

• Promotes optimal immune function*
• Important in collagen production, which enhances skin, nail, and hair health*
• Supports healthy tissue and cartilage formation, a benefit during wound healing and injury repair*
• Plays a role in phase I liver detoxification, plus its antioxidant properties help protect against the toxic effects of heavy metals*
• Helps increase glutathione, a potent antioxidant necessary for supporting phase II liver detoxification*

The benefits of collagen production, its antioxidant status, and immune support make vitamin C an important nutrient for surgery patients to support wound healing*

Zinc is a trace mineral that is involved in more than 300 enzyme reactions in the body.*

Zinc citrate is well-tolerated and well-absorbed.* After iron, zinc is the second most abundant trace element in the body.

Zinc plays an important role in immune function, as well as in neurotransmitters, wound healing, growth, thyroid hormone function, insulin activity, and taste and smell.* Zinc is a cofactor in the synthesis of DNA, RNA, and protein, and is found in more than 300 enzymes. For example, zinc is needed for the transport protein of vitamin A, and insufficient zinc levels can lead to vitamin A deficiency.* Zinc is an essential metal cofactor for one kind of superoxide dismutase (SOD), a major class of antioxidant enzymes.*