Vitamin C + D3 & Zinc
NutriBiotic Immunity
Vitamin C + D3 & Zinc
4.9
★ ★ ★ ★ ★
(15118 ratings)
Zinc 40 mg
Vitamin C 1500 mg
Score 92.0
A potent immune support capsule featuring a robust blend of Vitamin C, Vitamin D3, and Zinc, offering comprehensive benefits for overall immune function and general health.
Quantity: 100 Capsule(s)Servings size: 2 Capsule(s) (50 servings)
Selected goals:
Other goals:
Immunity
Skin Health
Hair Health
General Health
Testosterone Support
leaderboard Score 92.0
A potent immune support capsule featuring a robust blend of Vitamin C, Vitamin D3, and Zinc, offering comprehensive benefits for overall immune function and general health.
insights Analysis
This product is a powerful immune-focused supplement, combining a very high dose of Vitamin C (1500mg as L-Ascorbic Acid) with substantial doses of Vitamin D3 (125mcg or 5000 IU) and Zinc (40mg as Zinc Sulfate). This trio is a recognized powerhouse for immune system support, especially Vitamin D3, which is often deficient and critical for immune modulation. The capsule form is straightforward, and the pricing, particularly for the larger size, offers good value for these key ingredients.
- Excellent combination of three top-tier immune-supporting nutrients (C, D3, Zinc).
- High doses of all three ingredients, particularly Vitamin D3 and Zinc, for strong efficacy.
- Good value, especially the larger quantity option.
- The 40mg Zinc Sulfate dose is quite high for daily, long-term use and might require monitoring to prevent copper deficiency.
- The 1500mg Vitamin C dose might be higher than some individuals need daily, potentially leading to mild digestive upset.
- Lacks additional diverse immune-supportive compounds like herbs or probiotics.
- High doses of Zinc (40mg) can interfere with copper absorption; prolonged daily use should be monitored by a healthcare professional.
- Very high dose of Vitamin D3 (5000 IU); while generally safe, those with hypercalcemia or kidney issues should consult a doctor.
- High dose of Vitamin C can cause gastrointestinal issues for sensitive individuals.
$10.49($0.20 per serving)
 iHerb | $ 10.49 |
bolt Effectiveness for goals
While regular Vitamin C supplementation may not prevent colds in the general population, it might reduce the duration or severity of symptoms in some individuals. It has shown some benefit in people undergoing extreme physical stress, such as marathon runners or soldiers in subarctic conditions. For the average person, consistent intake primarily supports overall immune function.
Some evidence suggests that zinc supplements, particularly zinc lozenges or syrup taken within 24 hours of cold symptom onset, may reduce the duration of a common cold in adults. However, the optimal dosage and formulation for consistent effectiveness are still subjects of ongoing research. Taking zinc can sometimes cause side effects like nausea or an unpleasant taste.
Generally, Vitamin C and zinc are safe to take together, and there are no significant known adverse interactions at commonly recommended dosages. High doses of zinc on an empty stomach can sometimes cause nausea, but Vitamin C typically does not interfere with zinc absorption. Some studies have even explored potential synergistic benefits.
Both Vitamin C and zinc play crucial roles in immune function, and deficiencies in either can impair immunity. While some research suggests that combined supplementation might offer benefits, especially in populations at risk of deficiency, direct evidence for enhanced effectiveness beyond their individual benefits is still being investigated. They are often combined in over-the-counter cold remedies due to their known individual immune support roles.
Zinc is essential for the development and function of immune cells, playing a critical role in both innate and adaptive immunity. Adequate zinc levels are necessary for proper immune response, and deficiency can lead to impaired immune function and increased susceptibility to various infections. It supports overall immune system resilience.
schedule Dosage, timing & forms
The Tolerable Upper Intake Level (UL) for adult Vitamin C is 2,000 mg per day. For adult Zinc, the UL is 40 mg per day. Exceeding these levels consistently can lead to adverse effects such as gastrointestinal distress for Vitamin C and potential copper deficiency or immune system impairment for Zinc.
Yes, Vitamin C and Zinc supplements can generally be taken together. In fact, they are often combined in many over-the-counter immune support formulas. There is no evidence suggesting a negative interaction when taken simultaneously.
The recommended dietary allowance (RDA) for adult men is 90 mg per day and for adult women is 75 mg per day. Higher doses are often used in supplements, but the tolerable upper intake level (UL) for adults is 2,000 mg daily from all sources. Exceeding the UL can lead to gastrointestinal issues.
The recommended dietary allowance (RDA) for adult men is 11 mg per day and for adult women is 8 mg per day. The tolerable upper intake level (UL) for adult zinc intake is 40 mg per day from all sources. Exceeding the UL can lead to adverse effects, including copper deficiency.
Research suggests that Vitamin C does not significantly interfere with the absorption of Zinc, nor does Zinc impede Vitamin C absorption. Some studies even indicate that Vitamin C might slightly enhance zinc absorption, although this effect is generally not considered clinically significant for most individuals. They are generally considered compatible for co-administration.
health_and_safety Safety & interactions
Yes, Vitamin C and zinc can generally be taken together. Some research suggests that taking them concurrently may offer synergistic benefits, particularly for immune support. There is no strong evidence of adverse interactions when consumed within recommended dosages.
Yes, it is possible to take too much zinc, particularly from supplements. Acute symptoms of excessive intake include nausea, vomiting, diarrhea, and headaches. Chronic high intake can lead to copper deficiency, impaired immune function, and reduced HDL ("good") cholesterol levels.
Common side effects of zinc supplements can include nausea, vomiting, diarrhea, and abdominal pain. Taking zinc with food may help reduce these gastrointestinal effects. Prolonged high-dose use can lead to copper deficiency.
High doses of Vitamin C can lead to gastrointestinal disturbances such as diarrhea, nausea, and abdominal cramps. These effects are generally not serious and typically resolve by reducing the dosage. For some individuals, very high doses might increase the risk of kidney stone formation.
Generally, Vitamin C does not significantly impair the absorption of zinc. In some cases, it might even slightly enhance zinc absorption, particularly from certain food sources. There is no evidence that taking them together within recommended doses causes an adverse interaction regarding absorption.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Vitamin C | 1500 mg |
Vitamin D3 | 125 mcg |
Zinc | 40 mg |
Categories
Vitamin C 90.0
Delivers a substantial 1500mg of L-Ascorbic Acid, providing a very high and effective dose for antioxidant protection, collagen synthesis, and robust immune system support. This quantity ensures comprehensive coverage for Vitamin C needs.
Zinc 90.0
Contains 40mg of Zinc Sulfate, a highly bioavailable form, offering a powerful dose for immune modulation and various enzymatic functions. While very effective, users should be mindful of potential long-term copper interactions at this higher dosage.
Goals
Immunity 98.0
This product features an ideal combination of high-dose Vitamin C (1500mg), Vitamin D3 (5000 IU), and Zinc (40mg), all critically important and synergistic for robust immune function. This powerful trio provides comprehensive support for both innate and adaptive immunity, making it exceptionally effective for this goal.
General Health 85.0
Vitamin C, D3, and Zinc are fundamental micronutrients involved in a vast array of bodily processes, from bone health and mood regulation (D3) to antioxidant defense and enzyme function (C, Zinc). Their presence in high doses significantly contributes to overall physiological well-being.
Skin Health 75.0
Vitamin C is vital for collagen synthesis, promoting skin elasticity and healing. Zinc aids in wound repair and reducing inflammation, while Vitamin D3 plays a role in skin cell growth and immune modulation within the skin. Together, they offer substantial benefits for skin health.
Recommended Alternatives
85 Value 
Vitamin C 1000 mg with Zinc 45 mg
Nutricost
4.8
★★★★★
(449 ratings)
Offers a very high dose of both Vitamin C and Zinc at an exceptionally low price per serving, providing excellent core immune support with superior cost-effectiveness.
75 Value 
C 1000 mg with Rose Hips
21st Century
4.8
★★★★★
(4334 ratings)
Delivers a strong 1000 mg dose of Vitamin C with added Rose Hips at an incredibly affordable price, offering significant immune support for an outstanding value.
70 Value 
C 1000 mg
Swanson
4.8
★★★★★
(1596 ratings)
An incredibly inexpensive source of high-dose Vitamin C, providing fundamental immune system support at an unmatched price point.
75 Performance 
Immune Booster
NaturesPlus Source of Life
4.8
★★★★★
(426 ratings)
Offers a wider array of immune-supporting ingredients beyond just C, D3, and Zinc, including beneficial botanicals and a probiotic, for a more comprehensive and holistic approach to immune health.
80 Performance 
Stress B with Zinc
21st Century
4.7
★★★★★
(3486 ratings)
Provides a robust dose of Vitamin C and Zinc alongside a complete B-vitamin complex, which can enhance energy, reduce stress, and indirectly support overall immune function more broadly.
78 Performance 
Healthy Eyes Lutein and Antioxidants
21st Century
4.7
★★★★★
(13675 ratings)
While marketed for eye health, it contains a strong antioxidant profile with Vitamin C, Zinc, Vitamin A, and E, offering comprehensive cellular protection and immune system support without redundancy.
85 Budget
Vitamin C 1000 mg with Zinc 45 mg
Nutricost
4.8
★★★★★
(449 ratings)
Offers strong doses of Vitamin C and Zinc at a significantly lower price per serving, providing excellent foundational immune support more economically.
70 Budget
C 1000 mg
Swanson
4.8
★★★★★
(1596 ratings)
An extremely affordable choice for a potent dose of Vitamin C, ideal for those primarily seeking cost-effective Vitamin C support.
70 Budget 
C 500 mg
21st Century
4.8
★★★★★
(31743 ratings)
Delivers basic Vitamin C support at a remarkably low price per serving, making it a very budget-friendly daily immune option.
85 Value
Vitamin C 1000 mg with Zinc 45 mg
Nutricost
4.8
★★★★★
(449 ratings)
Offers a very high dose of both Vitamin C and Zinc at an exceptionally low price per serving, providing excellent core immune support with superior cost-effectiveness.
75 Value
C 1000 mg with Rose Hips
21st Century
4.8
★★★★★
(4334 ratings)
Delivers a strong 1000 mg dose of Vitamin C with added Rose Hips at an incredibly affordable price, offering significant immune support for an outstanding value.
70 Value
C 1000 mg
Swanson
4.8
★★★★★
(1596 ratings)
An incredibly inexpensive source of high-dose Vitamin C, providing fundamental immune system support at an unmatched price point.
75 Performance
Immune Booster
NaturesPlus Source of Life
4.8
★★★★★
(426 ratings)
Offers a wider array of immune-supporting ingredients beyond just C, D3, and Zinc, including beneficial botanicals and a probiotic, for a more comprehensive and holistic approach to immune health.
80 Performance
Stress B with Zinc
21st Century
4.7
★★★★★
(3486 ratings)
Provides a robust dose of Vitamin C and Zinc alongside a complete B-vitamin complex, which can enhance energy, reduce stress, and indirectly support overall immune function more broadly.
78 Performance
Healthy Eyes Lutein and Antioxidants
21st Century
4.7
★★★★★
(13675 ratings)
While marketed for eye health, it contains a strong antioxidant profile with Vitamin C, Zinc, Vitamin A, and E, offering comprehensive cellular protection and immune system support without redundancy.