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Emergency Vitamin C | Time Release Immune Support

Discover how emergency Vitamin C with time release technology, Rose hips, and bioflavonoids supports your immune system, fights free radicals, and nourishes tissues.

Why It Matters

What Is Emergency Vitamin C and Why Does It Matter?

When cold and flu season hits β€” or when your body is under unusual stress β€” having a reliable source of emergency Vitamin C can make a real difference in how well your immune defenses hold up. Vitamin C (ascorbic acid) is a water-soluble nutrient the human body cannot produce on its own due to a mutation in the L-gulonolactone oxidase gene. That means every milligram must come from food or supplementation.

Nature's Sunshine Vitamin C Time Release is formulated to deliver 1,000 mg of Vitamin C in a single tablet, paired with a time release coating that slows absorption until the nutrients reach the intestines. This means the Vitamin C is delivered gradually throughout the day rather than all at once β€” an important consideration, since research shows that absorption falls to about 50% or less with single doses above 1 g.

Beyond its role as a potent antioxidant, Vitamin C is a cofactor for enzymes involved in collagen biosynthesis, carnitine and catecholamine metabolism, and dietary iron absorption. 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 oxidant-scavenging activity of the skin.

Immune & Antioxidant

How Emergency Vitamin C Supports Your Immune System and Fights Free Radicals

More than half a century of research has shown Vitamin C to be a crucial player in various aspects of the immune system. It helps maintain epithelial integrity, enhances the differentiation and proliferation of B cells and T cells, enhances phagocytosis, normalizes cytokine production, and decreases histamine levels. Plasma concentrations of Vitamin C decline rapidly during viral infections, underscoring why having an emergency Vitamin C supply on hand matters during times of increased need.

Research suggests that regular Vitamin C supplementation modestly reduces the duration of colds β€” by about 8% in adults and 14% in children β€” and may lessen severity, though it does not appear to prevent colds in the general population. The benefit is more pronounced in people under severe physical stress, such as marathon runners or military personnel.

As an antioxidant, Vitamin C scavenges reactive oxygen species in aqueous cellular compartments and plasma, and it regenerates the antioxidant form of vitamin E at membrane interfaces. Multiple human trials demonstrate that supplementation raises antioxidant capacity and reduces biomarkers of oxidative damage.

This formula also supports collagen production β€” a protein required for wound healing and the structural integrity of skin, blood vessels, bones, and cartilage. Without adequate Vitamin C, prolyl and lysyl hydroxylase enzymes cannot properly hydroxylate collagen precursors, potentially leading to structurally defective collagen.

Unique Formula

More Than Just Ascorbic Acid: The Bioflavonoid Advantage

What sets this emergency Vitamin C apart from a simple ascorbic acid tablet is the carefully blended base of Rose hips extract, acerola fruit extract, Rutin, Lemon bioflavonoid extract, and Hesperidin complex. These naturally occurring bioflavonoids and plant extracts work alongside Vitamin C to broaden antioxidant and immune-supportive coverage.

The time release coating is another important distinction. Rather than flooding your system with a large dose that may be poorly absorbed, the special coating slows nutrient release into the intestines. This is a completely natural product with no sugar, starch, artificial colorings, or flavorings β€” and it carries vegan and non-GMO attributes.

If you have questions about whether this formula is right for your individual health needs, our naturopath is available for a free consultation. We're happy to help you understand how emergency Vitamin C fits into your overall wellness plan.

What's inside

Key ingredients

Vitamin C (ascorbic acid) β€” 1,000 mg
Vitamin C is a water-soluble antioxidant and essential cofactor the body cannot synthesize on its own. Research suggests it supports the immune system by enhancing phagocytosis, promoting B-cell and T-cell proliferation, and maintaining epithelial barrier function against pathogens. A Cochrane review of 29 trials with over 11,000 participants found that regular supplementation modestly reduces cold duration (about 8% in adults, 14% in children) and severity, with greater benefit in populations under heavy physical stress. As an antioxidant, it directly scavenges reactive oxygen species and regenerates vitamin E. It also serves as an essential cofactor for collagen biosynthesis β€” supporting skin, connective tissue, and wound healing β€” and enhances the absorption of non-heme iron from plant-based foods. Studies suggest it may support bronchial health, with clinical evidence showing supplementation at 400 mg/day or more may improve FEV1% in patients with COPD. Research also links adequate Vitamin C status to respiratory system health, upper respiratory comfort, and post-illness recovery.
Rose hips β€” 25 mg
Rose hips (Rosa canina) are among the richest natural sources of Vitamin C and contain a broad spectrum of polyphenols, carotenoids, and the galactolipid GOPO. They have been used traditionally for over 2,000 years to support immune health, and during World War II, rose hip syrup was distributed in the UK as a Vitamin C substitute when citrus was scarce. Research suggests that Rose hips possess exceptionally high antioxidant capacity β€” ranking among the highest measured fruits in ORAC assays β€” and clinical studies confirm increased antioxidant status in healthy adults following supplementation. Meta-analyses of Vitamin C supplementation (the primary bioactive in Rose hips) show an 8–14% reduction in cold duration, supporting their traditional use during cold and flu season. Historically, Rose hips have also been used as a recovery tonic after illness, attributed to their broad antioxidant, anti-inflammatory, and tonic properties documented in European and Asian herbal traditions.
Acerola fruit extract β€” 25 mg
Acerola (a Cherry-family fruit) is included in this formula for its concentrated antioxidant polyphenols, particularly anthocyanins. Research suggests that tart Cherry anthocyanins upregulate endogenous antioxidant pathways including Nrf2/ARE, and human trials show reduced oxidative stress markers such as MDA and oxidized LDL following supplementation. Studies also indicate that the anthocyanins modulate immune-inflammatory signaling by inhibiting COX-1/2 and NF-ΞΊB, reducing pro-inflammatory markers including TNF-Ξ±, IL-1Ξ², and IL-6 in human studies. These immune-modulating effects complement the Vitamin C in this formula.
Rutin β€” 25 mg
Rutin (quercetin-3-O-rutinoside) is a flavonoid glycoside first separated in the 1930s and sometimes referred to as vitamin P. It is found naturally in buckwheat, citrus fruits, and many vegetables. Research suggests Rutin acts as a potent antioxidant through direct free-radical scavenging, upregulation of endogenous antioxidant enzymes (SOD, catalase, glutathione peroxidase), and activation of the Nrf2/ARE pathway. In preclinical studies, Rutin demonstrates anti-inflammatory effects by suppressing pro-inflammatory cytokine production from macrophages, inhibiting NF-ΞΊB signaling, and reducing TNF-Ξ± and IL-1Ξ². It also modulates immune function, including mast cell stabilization β€” research shows Rutin inhibited IgE-mediated histamine release and suppressed multiple inflammatory mediators in mast cell models.
Hesperidin bioflavonoid extract β€” 25 mg
Hesperidin is a flavanone glycoside characteristic of citrus fruits, first isolated from citrus peel in 1828. Research suggests it provides antioxidant benefits by scavenging reactive oxygen species, enhancing endogenous antioxidant enzyme activity (including SOD and catalase), and activating the ERK/Nrf2 signaling pathway β€” effects demonstrated in vitro, in animal studies, and in human trials measuring oxidative stress biomarkers. Studies also show Hesperidin modulates the immune system by downregulating pro-inflammatory cytokines (TNF-Ξ±, IL-1Ξ², IL-6) and upregulating anti-inflammatory IL-10, while inhibiting NF-ΞΊB. A human trial found a Hesperidin-containing supplement improved immune function and the oxidative-inflammatory state in adults. Its anti-inflammatory and antioxidant properties also support respiratory and vascular health in preclinical research.
Lemon bioflavonoid extract β€” 25 mg
Lemon (Citrus Γ— limon) is a well-characterized source of Vitamin C and flavonoids including eriocitrin, Hesperidin, and naringenin. Research suggests these compounds contribute documented antioxidant capacity β€” a double-blind trial found citrus extract combined with Vitamin C significantly increased lipoprotein oxidation lag time, outperforming vitamin E. Lemon's Vitamin C content supports immune defense against respiratory infections; a clinical review found Vitamin C intake improved symptoms and shortened the duration of respiratory tract infections including the common cold. Lemon bioflavonoids complement the ascorbic acid in this formula, broadening its antioxidant and immune-supportive profile.
Dicalcium phosphate
Dicalcium phosphate serves as a tablet base and provides a small amount of Calcium, the most abundant mineral in the human body. More than 99% of the body's Calcium is stored in bones and teeth as hydroxyapatite. Calcium is essential for muscle contraction, nerve transmission, and cellular signaling. In this formula, dicalcium phosphate primarily functions as a structural component of the tablet.
Vitamin C (1000 mg, Time Release)
Vitamin C (1000 mg, Time Release)
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Vitamin C (1000 mg, Time Release)
Vitamin C (1000 mg, Time Release)
$47.65
Who Benefits

Who Should Consider Emergency Vitamin C?

This formula may be a good fit for adults looking to bolster their immune defenses during cold and flu season or during periods of increased physical or environmental stress. Research suggests the benefits of regular Vitamin C supplementation on cold duration are more pronounced in people exposed to brief periods of severe physical exercise β€” such as runners, hikers, and those with demanding physical jobs.

Because the body cannot store Vitamin C β€” it's water-soluble and any excess is excreted β€” consistent daily intake is important for maintaining adequate levels. People whose diets are low in fruits and vegetables, smokers (who are recommended to increase Vitamin C intake by 35 mg per day), and anyone recovering from illness may find targeted supplementation especially helpful.

This product is vegan and non-GMO, making it suitable for a wide range of dietary preferences. If you're unsure whether emergency Vitamin C supplementation is right for you, our naturopath offers free consultations and can help you evaluate your individual needs.

Directions

How to Take Emergency Vitamin C

Take one tablet daily with a meal. The time release coating is designed to slow absorption until the nutrients reach the intestines, helping to deliver Vitamin C gradually throughout the day.

Each bottle contains 120 tablets β€” a four-month supply at the recommended serving size of one tablet per day.

About the author

Written by Greg Howlett

GH

Greg Howlett

Founder

Greg has spent over a decade helping customers choose the right natural-health products. He personally vets every formula we carry and writes these guides to cut through the marketing noise with practical, experience-based advice.

FAQ

Frequently asked questions

What makes this emergency Vitamin C different from regular Vitamin C tablets?

This formula features a time release coating that slows absorption until the nutrients reach the intestines, delivering Vitamin C gradually rather than all at once. It is also blended with a base of Rose hips extract, acerola extract, Rutin, Lemon bioflavonoids, and Hesperidin complex β€” naturally occurring bioflavonoids that complement the antioxidant and immune-supportive effects of ascorbic acid. It contains no sugar, starch, artificial colorings, or flavorings, and it is vegan and non-GMO.

Can Vitamin C prevent the common cold?

A Cochrane review of 29 trials involving over 11,000 participants found that regular Vitamin C supplementation does not prevent colds in the general population. However, the same body of evidence shows it modestly reduces the duration of colds (about 8% in adults, 14% in children) and may lessen severity. The benefit appears more pronounced in people under severe physical stress, such as marathon runners and military personnel. Taking Vitamin C after a cold has already started does not appear to be helpful based on current evidence.

Why is time release important for a 1,000 mg Vitamin C tablet?

Research shows that about 70–90% of usual dietary Vitamin C intakes (30–180 mg/day) are absorbed, but absorption falls to about 50% or less with increasing doses above 1 g per day. The time release coating on this tablet is designed to slow the delivery of Vitamin C, allowing it to be released gradually into the intestines throughout the day rather than flooding the system with a large single dose.

What role do bioflavonoids play in this formula?

The bioflavonoids β€” Rose hips, acerola, Rutin, Hesperidin, and Lemon bioflavonoids β€” are naturally occurring plant compounds with documented antioxidant and anti-inflammatory properties. Research suggests they support immune function, scavenge free radicals, and may modulate inflammatory signaling. Including them alongside Vitamin C broadens the formula's antioxidant profile beyond what ascorbic acid alone provides.

Is this product safe for everyday use?

When taken at suggested doses, Vitamin C supplements are generally considered safe. The Institute of Medicine has set the Tolerable Upper Intake Level for adults at 2,000 mg per day to prevent gastrointestinal discomfort such as stomach upset and diarrhea. This formula provides 1,000 mg per tablet, well within that range. People with kidney disease, G6PD deficiency, hemochromatosis, or those taking anticoagulant, statin, or estrogen-containing medications should consult a healthcare professional before use.

Can I speak with someone about whether this formula is right for me?

Absolutely. We offer free naturopathic consultations β€” no purchase or membership required. Our naturopath can help you evaluate your individual needs and determine whether this emergency Vitamin C formula fits your wellness goals.

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