Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.5
USERS' SCORE
Good
Based on 4 Reviews
8.6
Supplement Facts
Serving Size: 1 Gummy
Serving Per Container: 60
Amount Per Serving
%DV
Calories
10
 
Total Carbohydrates
2 g
1%**
Total Sugars
2 g
Includes 2 g Added Sugars
4%**
Vitamin D3 (as Cholecalciferol)
25 mcg (1000 IU)
125%
Sodium
5 mg
<1%

Top Medical Research Studies

9
Vitamin D3 modulates autoimmune response
We explored how Vitamin D3 impacts autoimmune thyroiditis, a specific autoimmune disorder. In this study, researchers established a mouse model of experimental autoimmune thyroiditis (EAT) to see how Vitamin D3 could influence this condition. After eight weeks of treatment, they assessed thyroid health and immune response through various methods, including staining tissues and measuring hormone levels.

Our observations revealed that administering Vitamin D3 helped reduce damage to the thyroid and decreased the presence of inflammatory cells within the thyroid. This treatment also led to lower levels of thyroid hormones and autoimmune antibodies in the blood, highlighting its positive effect on thyroid function. Additionally, Vitamin D3 appeared to promote the regulatory T cell (Treg) subset while decreasing the levels of Th17 cells, which are often involved in autoimmune processes.

Mechanistically, the study found that Vitamin D3 triggered specific pathways that influence Treg cell activity and survival. Notably, it activated a signaling pathway involving YAP and JAK/STAT, which are crucial for immune cell regulation. These findings suggest that Vitamin D3 could play a significant role in balancing immune responses in autoimmune thyroiditis, making it a promising candidate for further research and potential treatment strategies.
Read More
9
Vitamin D3 mitigates autoimmune thyroiditis
Our research aimed to understand how vitamin D3 affects autoimmune thyroiditis, particularly in the context of Hashimoto's thyroiditis, which is characterized by low levels of vitamin D3 in patients. We induced a model of autoimmune thyroiditis in female mice and treated them with vitamin D3 to see if it could alleviate the symptoms of this condition.

After 8 weeks of treatment, we observed that vitamin D3 significantly improved the condition of the thyroid in these mice. The inflammation that commonly accompanies autoimmune thyroiditis decreased, and levels of thyroid autoantibodies, which indicate the severity of the disorder, also dropped. Notably, the application of vitamin D3 inhibited the activity of harmful immune cells while promoting the function of protective cells, providing a better balance in the immune response.

Overall, our findings suggest that vitamin D3 supplementation could be a promising strategy to manage autoimmune thyroiditis by restoring immune balance and reducing inflammation. This not only enhances our understanding of the disease but also opens up potential avenues for treatment in humans facing similar issues with autoimmune disorders.
Read More
We aimed to understand how vitamin D3, specifically its active form 1,25(OH)D, affects autoimmune hepatitis (AIH), a complex autoimmune disease that causes liver damage. Researchers focused on the role of a special type of immune cell known as dendritic cells (DCs), which are influenced by vitamin D3 to promote a more balanced immune response.

Through our investigation using a mouse model, we observed that injecting these vitamin D3-modulated dendritic cells, which overexpress a molecule called PD-L1, significantly lessened liver injury and severity of autoimmune hepatitis. This treatment appeared to correct the imbalance between two types of T cells: regulatory T cells (TFR) and follicular helper T cells (TFH).

By increasing the TFR population and restoring their balance with TFH cells, vitamin D3 treatment helped regulate this immune response. Additionally, the infusion boosted the production of anti-inflammatory substances while decreasing those linked to inflammation, suggesting a potential new avenue for treating autoimmune hepatitis. Overall, these findings indicate that vitamin D3-modulated dendritic cells could be a promising strategy for managing autoimmune conditions like AIH.
Read More

Most Useful Reviews

9
Child enjoys vitamins
95 people found this helpful
Excellent D3; my son loves them and chews them with pleasure. I've ordered more.
Read More
7.5
Good for kids
4 people found this helpful
I recommend these for children. They have an optimal taste and dose for my 6-year-old. The endocrinologist prescribed triple doses to improve his vitamin D levels, followed by a daily dose. We order more, as they taste good (not sugary) and 1000 units for the price is excellent! Highly recommend!
Read More
7.5
Boosts immune system
2 people found this helpful
Excellent! Vitamin D3 significantly impacts immune system activity. Colecalciferol is essential for natural killer lymphocytes, crucial for combating pathogenic bacteria, viruses, and even cancer. It also curtails cells involved in autoimmune disorders. Sufficient intake lowers instances of acute respiratory infections and, conversely, a deficiency heightens the risk of autoimmune diseases. The dosage is appropriate for children of various ages, and the pleasant candy-like taste lifts spirits.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.5
  • All Researches
9
Vitamin D3 mitigates autoimmune thyroiditis
Our research aimed to understand how vitamin D3 affects autoimmune thyroiditis, particularly in the context of Hashimoto's thyroiditis, which is characterized by low levels of vitamin D3 in patients. We induced a model of autoimmune thyroiditis in female mice and treated them with vitamin D3 to see if it could alleviate the symptoms of this condition.

After 8 weeks of treatment, we observed that vitamin D3 significantly improved the condition of the thyroid in these mice. The inflammation that commonly accompanies autoimmune thyroiditis decreased, and levels of thyroid autoantibodies, which indicate the severity of the disorder, also dropped. Notably, the application of vitamin D3 inhibited the activity of harmful immune cells while promoting the function of protective cells, providing a better balance in the immune response.

Overall, our findings suggest that vitamin D3 supplementation could be a promising strategy to manage autoimmune thyroiditis by restoring immune balance and reducing inflammation. This not only enhances our understanding of the disease but also opens up potential avenues for treatment in humans facing similar issues with autoimmune disorders.
Read More
We explored an intriguing instance of IgG4-related disease (IgG4-RD) manifesting as Mikulicz syndrome in an 85-year-old male patient. This condition usually involves significant systemic symptoms, yet our patient exhibited primarily local manifestations, specifically bilateral dacryoadenitis and orbital pseudotumor, without major organ complications.

Interestingly, despite normal serum IgG4 levels, which were below 135 mg/dL, the clinical and imaging findings strongly suggested the diagnosis of IgG4-RD. This scenario underscores the importance of undertaking a biopsy for accurate diagnosis. Histopathological examination revealed notable signs, such as a dense lymphoplasmacytic infiltrate and storiform fibrosis, with a considerable percentage of IgG4-positive cells, ultimately confirming our diagnosis.

We observed that treatment with prednisone, alongside azathioprine for long-term control, was effective. To mitigate the risk of glucocorticoid-induced osteoporosis, we added calcium and vitamin D3 supplementation. Remarkably, the patient showed significant clinical improvement within just 24 hours, with resolution of orbital and glandular symptoms over the following year. There was a complete recovery of vision and no relapses, with only minor dry eye as a long-term concern.

This case demonstrates the necessity of considering IgG4-RD even when serum IgG4 levels are normal and highlights the role of histopathology in diagnosis. Furthermore, it showcases the effectiveness of corticosteroids as a first-line treatment in managing this condition.
Read More
We examined the effects of calcitriol, an active form of vitamin D3, on mesenchymal stem cells (MSCs) in a model of rheumatoid arthritis. To do this, we induced arthritis in BALB/c mice and divided them into three groups: those without treatment, those treated with untreated MSCs, and those treated with calcitriol-exposed MSCs.

After conducting our experiments, we found that MSCs treated with calcitriol demonstrated improved regulatory functions and inhibited inflammatory responses more effectively than untreated MSCs. Specifically, we observed differences in the behavior of immune cells, with calcitriol-treated cells showing reduced levels of certain inflammatory cytokines, like INF-γ and IL-17, while increasing beneficial cytokines such as IL-4, IL-10, and TGF-β.

These findings suggest that vitamin D3 may play an important role in moderating the immune response in autoimmune conditions like rheumatoid arthritis, potentially offering a pathway for more effective treatment options.
Read More
We aimed to understand how vitamin D3, specifically its active form 1,25(OH)D, affects autoimmune hepatitis (AIH), a complex autoimmune disease that causes liver damage. Researchers focused on the role of a special type of immune cell known as dendritic cells (DCs), which are influenced by vitamin D3 to promote a more balanced immune response.

Through our investigation using a mouse model, we observed that injecting these vitamin D3-modulated dendritic cells, which overexpress a molecule called PD-L1, significantly lessened liver injury and severity of autoimmune hepatitis. This treatment appeared to correct the imbalance between two types of T cells: regulatory T cells (TFR) and follicular helper T cells (TFH).

By increasing the TFR population and restoring their balance with TFH cells, vitamin D3 treatment helped regulate this immune response. Additionally, the infusion boosted the production of anti-inflammatory substances while decreasing those linked to inflammation, suggesting a potential new avenue for treating autoimmune hepatitis. Overall, these findings indicate that vitamin D3-modulated dendritic cells could be a promising strategy for managing autoimmune conditions like AIH.
Read More
9
Vitamin D impacts autoimmune treatment
We investigated the effects of Vitamin D modulation on autoimmune prostatitis using a mouse model. In this study, we focused on how changes in gut microbiota influence the immune response, specifically looking at how vitamin D can help shift macrophage polarization—key players in the immune system—from a pro-inflammatory state (M1) to a more healing state (M2).

We observed that treatment with Eriocalyxin B (EriB), known for its anti-inflammatory properties, significantly reduced prostate inflammation in these mice. Our findings indicate that EriB not only altered the gut microbiome but also enhanced the absorption of vitamin D, contributing to a shift in macrophage phenotype. This suggests that the immune state of macrophages, altered through gut bacteria and vitamin D levels, plays a crucial role in managing autoimmune prostatitis.

Notably, fecal transplantation from EriB-treated mice resulted in a marked reduction in inflammatory markers and further supported the macrophage polarization effect. This is the first time we connected gut microbiota and vitamin D as pivotal factors in the treatment of autoimmune disorders like chronic prostatitis, highlighting a new therapeutic pathway. Overall, our research emphasizes the importance of vitamin D in modulating autoimmune responses through gut health.
Read More

User Reviews

USERS' SCORE
Good
Based on 4 Reviews
8.6
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Child enjoys vitamins
95 people found this helpful
Excellent D3; my son loves them and chews them with pleasure. I've ordered more.
Read More
7.5
Good for kids
4 people found this helpful
I recommend these for children. They have an optimal taste and dose for my 6-year-old. The endocrinologist prescribed triple doses to improve his vitamin D levels, followed by a daily dose. We order more, as they taste good (not sugary) and 1000 units for the price is excellent! Highly recommend!
Read More
7.5
Boosts immune system
2 people found this helpful
Excellent! Vitamin D3 significantly impacts immune system activity. Colecalciferol is essential for natural killer lymphocytes, crucial for combating pathogenic bacteria, viruses, and even cancer. It also curtails cells involved in autoimmune disorders. Sufficient intake lowers instances of acute respiratory infections and, conversely, a deficiency heightens the risk of autoimmune diseases. The dosage is appropriate for children of various ages, and the pleasant candy-like taste lifts spirits.
Read More
7.5
Improves general health
1 people found this helpful
I ordered this vitamin D for my child, who typically refuses vitamins. Thankfully, he enjoys the sweet taste of this one. The product’s quality and ingredients are commendable. It can be administered after meals to enhance vitamin absorption. Vitamin D boosts immunity and generally improves my child's health. The packaging is of medium size.
Read More

Frequently Asked Questions

7.5
Boosts immune system
2 people found this helpful
Excellent! Vitamin D3 significantly impacts immune system activity. Colecalciferol is essential for natural killer lymphocytes, crucial for combating pathogenic bacteria, viruses, and even cancer. It also curtails cells involved in autoimmune disorders. Sufficient intake lowers instances of acute respiratory infections and, conversely, a deficiency heightens the risk of autoimmune diseases. The dosage is appropriate for children of various ages, and the pleasant candy-like taste lifts spirits.
7.5
Improves general health
1 people found this helpful
I ordered this vitamin D for my child, who typically refuses vitamins. Thankfully, he enjoys the sweet taste of this one. The product’s quality and ingredients are commendable. It can be administered after meals to enhance vitamin absorption. Vitamin D boosts immunity and generally improves my child's health. The packaging is of medium size.
7.5
Good for kids
4 people found this helpful
I recommend these for children. They have an optimal taste and dose for my 6-year-old. The endocrinologist prescribed triple doses to improve his vitamin D levels, followed by a daily dose. We order more, as they taste good (not sugary) and 1000 units for the price is excellent! Highly recommend!
We investigated how vitamin D levels and its receptor in muscle tissue relate to autoimmune disorders like idiopathic inflammatory myopathies (IIM). By examining 46 patients alongside 67 healthy controls, we sought to understand the connection between vitamin D, muscle function, and disease symptoms.

Over the course of our research, we observed that patients with IIM had reduced levels of biologically active vitamin D in their blood. This suggests that these patients might struggle with how their bodies metabolize vitamin D. Interestingly, regular exercise appeared to modify the blood vitamin D levels and gene expression associated with its receptor and activation enzyme in muscle tissue.

Furthermore, we found that these vitamin D levels and receptor expression correlated with the physical fitness of the IIM patients, as well as with the muscle's lipid metabolism and various disease manifestations. This indicates that maintaining adequate vitamin D levels could potentially play a role in improving muscle health in those affected by autoimmune conditions.
9
Vitamin D3 mitigates autoimmune thyroiditis
Our research aimed to understand how vitamin D3 affects autoimmune thyroiditis, particularly in the context of Hashimoto's thyroiditis, which is characterized by low levels of vitamin D3 in patients. We induced a model of autoimmune thyroiditis in female mice and treated them with vitamin D3 to see if it could alleviate the symptoms of this condition.

After 8 weeks of treatment, we observed that vitamin D3 significantly improved the condition of the thyroid in these mice. The inflammation that commonly accompanies autoimmune thyroiditis decreased, and levels of thyroid autoantibodies, which indicate the severity of the disorder, also dropped. Notably, the application of vitamin D3 inhibited the activity of harmful immune cells while promoting the function of protective cells, providing a better balance in the immune response.

Overall, our findings suggest that vitamin D3 supplementation could be a promising strategy to manage autoimmune thyroiditis by restoring immune balance and reducing inflammation. This not only enhances our understanding of the disease but also opens up potential avenues for treatment in humans facing similar issues with autoimmune disorders.
In our exploration of vitamin D3's role in autoimmune hepatitis (AIH), we conducted a thorough study using a large patient database to highlight how vitamin D deficiency affects those struggling with this condition.

We found that individuals with low levels of vitamin D, especially those below the threshold of 20 ng/mL, faced significantly worse health outcomes compared to their counterparts who had sufficient vitamin D levels. This included a staggering increase in the likelihood of all-cause mortality, hospitalizations, and even the need for liver transplants.

While the study set out to uncover the potential benefits of vitamin D3 treatment, it lacked the necessary details to isolate its direct effects. Despite confirming that vitamin D deficiency is linked to serious complications in AIH, we were unable to draw firm conclusions regarding how vitamin D3 treatment might specifically improve patient outcomes.

Overall, our findings signal a compelling call for further research into the benefits of vitamin D3 supplementation for individuals battling autoimmune diseases like AIH, paving the way for possibly critical health interventions.
We examined the effects of calcitriol, an active form of vitamin D3, on mesenchymal stem cells (MSCs) in a model of rheumatoid arthritis. To do this, we induced arthritis in BALB/c mice and divided them into three groups: those without treatment, those treated with untreated MSCs, and those treated with calcitriol-exposed MSCs.

After conducting our experiments, we found that MSCs treated with calcitriol demonstrated improved regulatory functions and inhibited inflammatory responses more effectively than untreated MSCs. Specifically, we observed differences in the behavior of immune cells, with calcitriol-treated cells showing reduced levels of certain inflammatory cytokines, like INF-γ and IL-17, while increasing beneficial cytokines such as IL-4, IL-10, and TGF-β.

These findings suggest that vitamin D3 may play an important role in moderating the immune response in autoimmune conditions like rheumatoid arthritis, potentially offering a pathway for more effective treatment options.

References

  1. Vernerová L, Vokurková M, Laiferová NA, Nemec M, Špiritović M, et al. Vitamin D and its receptor in skeletal muscle are associated with muscle disease manifestation, lipid metabolism and physical fitness of patients with myositis. Arthritis Res Ther. 2025;27:48. 10.1186/s13075-025-03516-9
  2. Wang CM, Chen YJ, Yang BC, Yang JW, Wang W, et al. Supplementation with active vitamin D3 ameliorates experimental autoimmune thyroiditis in mice by modulating the differentiation and functionality of intrathyroidal T-cell subsets. Front Immunol. 2025;16:1528707. 10.3389/fimmu.2025.1528707
  3. Mendoza-Vargas LÁ, Sevilla-Fuentes S, Bautista-Becerril B, Berthaúd-González B, Falfán-Valencia R, et al. IgG4-RD-Associated Mikulicz Syndrome Without Classic Systemic Involvement-A Case Report. J Clin Med. 2025;14. 10.3390/jcm14030958
  4. Rafati A, Ramezani R, Esmaeili Gouvarchin Ghaleh H, Bahrami S, Alvanegh AG, et al. Calcitriol Treated Mesenchymal Stem Cells Modulated Immune Response in Collagen-Induced Rheumatoid Arthritis in BALB/c Mice. Transplant Proc. 2025;57:355. 10.1016/j.transproceed.2024.12.020
  5. Kilani Y, Alsakarneh S, Madi MY, Mosquera DAG, Ferreira MN, et al. Autoimmune Hepatitis and Vitamin D Deficiency: A Nationwide Perspective. Aliment Pharmacol Ther. 2025;61:682. 10.1111/apt.18438
  6. Dai J, Song J, Chen X, Ding F, Ding Y, et al. 1,25(OH)D-treated mouse bone marrow-derived dendritic cells alleviate autoimmune hepatitis in mice by improving TFR/TFH imbalance. Immunopharmacol Immunotoxicol. 2025;47:59. 10.1080/08923973.2024.2435314
  7. Wielińska J, Górna K, Świerkot J, Bugaj B, Kolossa K, et al. Polymorphic Variants in the Vitamin D Receptor and Clinical Parameters of Rheumatoid Arthritis Patients Undergoing Anti-TNF Treatment. Arch Immunol Ther Exp (Warsz). 2024;72. 10.2478/aite-2024-0023
  8. Yu ZQ, Du HX, Gao S, Liang CZ. Eriocalyxin B ameliorated experimental autoimmune prostatitis via modulation of macrophage polarization through gut microbiota-mediated vitamin D alteration. Phytomedicine. 2024;135:156191. 10.1016/j.phymed.2024.156191
  9. Fondelli F, Willemyns J, Domenech-Garcia R, Mansilla MJ, Godoy-Tena G, et al. Targeting aryl hydrocarbon receptor functionally restores tolerogenic dendritic cells derived from patients with multiple sclerosis. J Clin Invest. 2024;134. 10.1172/JCI178949
  10. Grove-Laugesen D, Ebbehoj E, Watt T, Hansen KW, Rejnmark L. Changes in bone density and microarchitecture following treatment of Graves' disease and the effects of vitamin D supplementation. A randomized clinical trial. Osteoporos Int. 2024;35:2153. 10.1007/s00198-024-07241-y
  11. Zhang Q, He X, Chen W, Jiu J, Gao C, et al. Vitamin D3 attenuates autoimmune thyroiditis by regulating Th17/Treg cell differentiation via YAP/JAK1/STAT1 axis. Immunol Lett. 2024;269:106890. 10.1016/j.imlet.2024.106890
  12. Rodi M, de Lastic AL, Panagoulias I, Aggeletopoulou I, Kelaidonis K, et al. Myelin Oligodendrocyte Glycoprotein (MOG)35-55 Mannan Conjugate Induces Human T-Cell Tolerance and Can Be Used as a Personalized Therapy for Multiple Sclerosis. Int J Mol Sci. 2024;25. 10.3390/ijms25116092
  13. Maghbooli Z, Shirvani A, Moghadasi AN, Varzandi T, Hamtaei Ghashti S, et al. Investigating the effects of 25-hydroxyvitamin D3 on clinical outcomes in multiple sclerosis patients: A randomized, double-blind clinical trial- a pilot study. Mult Scler Relat Disord. 2024;87:105673. 10.1016/j.msard.2024.105673
  14. Fasihi M, Samimi-Badabi M, Robat-Jazi B, Bitarafan S, Moghadasi AN, et al. Immunoregulatory Effects of the Active Form of Vitamin D (Calcitriol), Individually and in Combination with Curcumin, on Peripheral Blood Mononuclear Cells (PBMCs) of Multiple Sclerosis (MS) Patients. Antiinflamm Antiallergy Agents Med Chem. 2024;23:138. 10.2174/0118715230293847240314073359
  15. Durá-Travé T, Gallinas-Victoriano F. Autoimmune Thyroiditis and Vitamin D. Int J Mol Sci. 2024;25. 10.3390/ijms25063154
  16. Qu F, Zhang M, Weinstock-Guttman B, Zivadinov R, Qu J, et al. An ultra-sensitive and high-throughput trapping-micro-LC-MS method for quantification of circulating vitamin D metabolites and application in multiple sclerosis patients. Sci Rep. 2024;14:5545. 10.1038/s41598-024-55939-0
image