Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 23 Researches
8
USERS' SCORE
Good
Based on 11 Reviews
8
Supplement Facts
Serving Size: 1 Chewable Tablet
Amount Per Serving
%DV
Vitamin D3 (as Cholecalciferol) (from Lanolin)
25 mcg (1,000 IU)
125%

Top Medical Research Studies

We aimed to understand how vitamin D influences bone health and helps combat osteoporosis, a condition that weakens bones. In our study, we used various mouse models, including those that mimic a deficiency in active vitamin D. Through a range of advanced methods, we assessed how changes in vitamin D levels affected bone structure and metabolism.

The research revealed that insufficient vitamin D led to a drop in Sirt1, a gene that plays a crucial role in maintaining bone density. This lack of Sirt1 resulted in increased bone loss. However, when we boosted Sirt1 levels in bone stem cells, we observed a reversal in bone loss. This improvement happened because higher Sirt1 levels reduced oxidative stress, slowed down aging processes in bone cells, and enhanced new bone formation while curbing bone resorption.

Additionally, our findings indicated that vitamin D directly stimulates Sirt1 expression in these stem cells, which is vital for bone health. We also explored the effects of resveratrol, a natural compound known for activating Sirt1, and found it helped alleviate osteoporosis symptoms linked to vitamin D deficiency by enhancing the relationship between Sirt1 and another protein called PGC1α, which supports bone formation and energy metabolism.

This research underscores the importance of the vitamin D-Sirt1/PGC1α axis in bone metabolism, providing insight into how vitamin D can serve as a target for osteoporosis prevention and treatment.
Read More
We explored the effects of vitamin D supplementation on osteoporosis, especially among individuals at risk for this condition. The Osteoporosis Research and Information Group (GRIO) highlighted the critical difference between daily and intermittent vitamin D dosing.

Current literature indicates that taking high doses of vitamin D intermittently, such as 60,000 IU a month, can actually elevate the chances of falls, fractures, and even premature death in some groups. Conversely, daily supplementation of 800-1000 IU, particularly alongside calcium, has been shown to reduce falls and non-vertebral fractures in the elderly who have a vitamin D deficiency.

Before anyone starts supplementing, it is crucial to measure their vitamin D levels to achieve a target concentration of 30 to 60 ng/mL. For those needing a quick boost in vitamin D levels—like patients showing symptoms of osteomalacia or those with critically low vitamin D—a starting loading dose followed by daily maintenance is the preferred approach. If daily options aren’t available, of course, a smaller intermittent dose can be a temporary solution until better options are accessible.
Read More
9
Probiotic support for osteoporosis treatment
We explored how a specific probiotic strain, FSHHK13M1, affects vitamin D metabolism and osteoporosis in mice. Previous research pointed out that the gut microbiota plays a crucial role in vitamin D metabolism, which is especially relevant for older adults who tend to suffer from osteoporosis due to declining organ functions.

Our study demonstrated that treating the mice with FSHHK13M1 led to a significant increase in their serum levels of active vitamin D metabolites, particularly 1,25-dihydroxy vitamin D. This increase was linked to activation of important bone health pathways, helping to fortify bone structure and function.

Not only did we observe improvements in vitamin D levels, but the intervention also restored balance in the gut microbiota, which showed signs of imbalance in mice suffering from osteoporosis. The findings suggest that FSHHK13M1 could be a promising direction for improving bone health and reducing fracture risks in the elderly by enhancing vitamin D levels naturally.

Overall, this research highlights the potential of combining probiotics with vitamin D strategies for better management of osteoporosis, especially in older populations who often face challenges absorbing conventional treatments.
Read More

Most Useful Reviews

9
Immune system support
This product is excellent! Vitamin D plays a key role in calcium-phosphorus metabolism, helping to absorb calcium from the intestines. Insufficient vitamin D can lower blood calcium levels, leading to osteoporosis and fractures. It’s also vital for immune health, reducing the risk of autoimmune diseases.
Read More
9
Immunity and osteoporosis
Vitamin D3 supports bone and teeth health, boosts immunity, and improves calcium and phosphorus absorption. It also aids muscle and nervous system health, and reduces the risk of osteoporosis and depression.
Read More
9
Bone mass reduction
Vitamin D increases calcium absorption, which strengthens bones. A deficiency leads to reduced bone mass, increasing the risk of osteoporosis and fractures, while also aiding calcium absorption in the intestines and kidneys.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 23 Researches
8
  • All Researches
We looked into the effects of vitamin D3 on osteoporosis management, particularly in relation to glucocorticoid-induced complications. In a recent case involving an 85-year-old patient with IgG4-related disease, vitamin D3 was used alongside prednisone and azathioprine. The goal was to prevent bone density loss often seen with steroid treatments.

Our focus on this case revealed that vitamin D3 played an essential role in supporting the patient’s bone health. This addition helped mitigate some side effects of long-term steroid use, specifically protecting against osteoporosis, while the patient experienced significant improvements in their orbital symptoms.

Over the course of treatment, the patient showed remarkable recovery in just 24 hours, along with a complete resolution of issues related to their eye condition over the following year. While direct data on vitamin D3's standalone effectiveness isn't highlighted, its use in this context underscores a possible beneficial role in osteoporosis prevention when combined with corticosteroids.
Read More
9
Probiotic support for osteoporosis treatment
We explored how a specific probiotic strain, FSHHK13M1, affects vitamin D metabolism and osteoporosis in mice. Previous research pointed out that the gut microbiota plays a crucial role in vitamin D metabolism, which is especially relevant for older adults who tend to suffer from osteoporosis due to declining organ functions.

Our study demonstrated that treating the mice with FSHHK13M1 led to a significant increase in their serum levels of active vitamin D metabolites, particularly 1,25-dihydroxy vitamin D. This increase was linked to activation of important bone health pathways, helping to fortify bone structure and function.

Not only did we observe improvements in vitamin D levels, but the intervention also restored balance in the gut microbiota, which showed signs of imbalance in mice suffering from osteoporosis. The findings suggest that FSHHK13M1 could be a promising direction for improving bone health and reducing fracture risks in the elderly by enhancing vitamin D levels naturally.

Overall, this research highlights the potential of combining probiotics with vitamin D strategies for better management of osteoporosis, especially in older populations who often face challenges absorbing conventional treatments.
Read More
9
Vitamin D derivatives enhance bone health
We looked into the potential effects of vitamin D3, particularly its derivatives, on osteoporosis. Recent research highlights how modifications to the A-ring of 1α,25-dihydroxyvitamin D can enhance its binding to the vitamin D receptor. This change not only boosts the vitamin's effectiveness but also helps it resist breakdown in the body, making it stay active for longer periods.

One standout example is a derivative known as AH-1, which demonstrated significant benefits for bone health in an osteoporosis model using ovariectomized rats. When given at a low dosage, AH-1 outperformed natural vitamin D, suggesting a promising path for improving osteoporosis treatment.

We also noted that while traditional vitamin D has its benefits, these newly developed analogs could lead to treatments that target osteoporosis more effectively, providing options without the side effects commonly associated with vitamin D therapy. This research emphasizes the importance of vitamin D derivatives as we seek better solutions for managing bone health.
Read More
9
Vitamin D3 improves bone health
We explored how Nano Vitamin D3 influences osteoporosis, particularly in the context of treatments involving anastrozole, a medication often used in cancer therapy. In our study, we observed the effects of Nano Vitamin D3 compared to selenium nanoparticles in female albino rats.

The research involved categorizing 28 rats into four groups, with one group receiving just anastrozole, while the other groups were treated with either selenium nanoparticles or Nano Vitamin D3 alongside anastrozole. After four weeks of treatment, we looked closely at the rats' mandibular bones to see how these treatments affected bone health.

Our findings indicated that both Selenium nanoparticles and Nano Vitamin D3 showed improvements in bone structure and cell health compared to the animals taking only anastrozole. The rats in the treatment groups demonstrated more newly formed collagen and healthier osteoblasts—cells that play a crucial role in bone formation. While we focused heavily on comparing these two approaches to therapy, the results confirmed that using Nano Vitamin D3 can be beneficial for combating osteoporosis exacerbated by anastrozole.
Read More
9
Vitamin D3 boosts childhood bone health
We investigated the effects of vitamin D3 supplementation during pregnancy on offspring's bone mineral density (BMD) as they grow. In the MAVIDOS study, pregnant women with low levels of vitamin D were given either a daily dose of 1000 IU of cholecalciferol (vitamin D3) or a placebo from their second trimester until delivery.

After the children reached ages 6 to 7, we assessed their bone health using advanced scanning techniques. The results revealed that those children whose mothers had received vitamin D3 supplementation exhibited higher BMD compared to those whose mothers received the placebo. This suggests that supplementing pregnant women with vitamin D3 could be a valuable public health strategy for improving bone health in children.

Even though this study focused on childhood, it reflects broader implications for how vitamin D3 might help in preventing conditions like osteoporosis later in life.
Read More

User Reviews

USERS' SCORE
Good
Based on 11 Reviews
8
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Immune system support
This product is excellent! Vitamin D plays a key role in calcium-phosphorus metabolism, helping to absorb calcium from the intestines. Insufficient vitamin D can lower blood calcium levels, leading to osteoporosis and fractures. It’s also vital for immune health, reducing the risk of autoimmune diseases.
Read More
9
Immunity and osteoporosis
Vitamin D3 supports bone and teeth health, boosts immunity, and improves calcium and phosphorus absorption. It also aids muscle and nervous system health, and reduces the risk of osteoporosis and depression.
Read More
9
Bone mass reduction
Vitamin D increases calcium absorption, which strengthens bones. A deficiency leads to reduced bone mass, increasing the risk of osteoporosis and fractures, while also aiding calcium absorption in the intestines and kidneys.
Read More
7.5
Osteoporosis prevention
The primary role of vitamin D-3 is to facilitate the absorption of calcium and phosphorus from food. In infants, it averts rickets, while in adolescents and adults, it prevents caries, gum diseases, and osteoporosis, promoting fracture healing. I take it myself and with my teenagers. It's enjoyable and the dosage is excellent!
Read More
7.5
Strengthened bones
Vitamin D3 is crucial for maintaining bone quality through calcium and phosphorus absorption, influencing osteoporosis risk and immune system strength. Adequate levels of this vitamin enhance muscle strength, mood, and overall energy, whilst deficiency can result in weakened bones and health.
Read More

Frequently Asked Questions

9
Bone mass reduction
Vitamin D increases calcium absorption, which strengthens bones. A deficiency leads to reduced bone mass, increasing the risk of osteoporosis and fractures, while also aiding calcium absorption in the intestines and kidneys.
7.5
Bone health improvement
264 people found this helpful
Children obtain essential nutrients for growth and bone capital formation from cholecalciferol. Adults use it to maintain balance and energy levels, while older individuals at risk of osteoporosis benefit from improved muscle function and bone density. Maintaining a normal level of cholecalciferol (D3) reduces the likelihood of injuries from falls.
6
Mood improvement
This vitamin D3 is fantastic! I notice improvements in mood and energy levels. It effectively combats depression and is suitable for the entire family. Vitamin D supports bone health, prevents rickets and osteoporosis through mineral regulation and is crucial for various bodily functions, including immune support.
7.5
Strengthened bones
Vitamin D3 is crucial for maintaining bone quality through calcium and phosphorus absorption, influencing osteoporosis risk and immune system strength. Adequate levels of this vitamin enhance muscle strength, mood, and overall energy, whilst deficiency can result in weakened bones and health.
7.5
Osteoporosis prevention
I purchased a tusk and I am very pleased. It is vital to take it as it aids in preventing osteoporosis, especially during winter or when residing indoors. As it functions similarly to hormones, I believe it is a crucial nutritional supplement for modern individuals.
8
Vitamin D's role in fracture risk
We examined the relationship between vitamin D levels and the risk of new vertebral fractures after patients underwent a specific spine procedure called percutaneous vertebral augmentation. Our focus was on postmenopausal women aged 50 and above, who often face an increased risk of fractures due to osteoporosis.

In this retrospective study, we categorized patients into groups based on whether they experienced new osteoporotic vertebral fractures or not. Our analysis revealed that low levels of serum 25-hydroxyvitamin D are an independent risk factor for these new fractures.

This suggests that maintaining adequate vitamin D levels could be crucial for individuals recovering from this type of spinal surgery. By ensuring active vitamin D supplementation after the procedure, patients may significantly lower their chances of future osteoporotic vertebral fractures, promoting better recovery and overall health.
We explored the effects of vitamin D supplementation on osteoporosis, especially among individuals at risk for this condition. The Osteoporosis Research and Information Group (GRIO) highlighted the critical difference between daily and intermittent vitamin D dosing.

Current literature indicates that taking high doses of vitamin D intermittently, such as 60,000 IU a month, can actually elevate the chances of falls, fractures, and even premature death in some groups. Conversely, daily supplementation of 800-1000 IU, particularly alongside calcium, has been shown to reduce falls and non-vertebral fractures in the elderly who have a vitamin D deficiency.

Before anyone starts supplementing, it is crucial to measure their vitamin D levels to achieve a target concentration of 30 to 60 ng/mL. For those needing a quick boost in vitamin D levels—like patients showing symptoms of osteomalacia or those with critically low vitamin D—a starting loading dose followed by daily maintenance is the preferred approach. If daily options aren’t available, of course, a smaller intermittent dose can be a temporary solution until better options are accessible.
8
Raloxifene enhances vitamin D3 effects
We conducted a study to assess the effects of combining raloxifene, a medication commonly used to treat osteoporosis, with cholecalciferol (vitamin D3) on bone mineral density in postmenopausal women with osteopenia. This randomized, open-label trial involved 112 participants who either received raloxifene along with vitamin D3 or vitamin D3 alone for 48 weeks.

Our findings revealed that those taking raloxifene with vitamin D3 experienced a significant increase in bone mineral density at the lumbar spine compared to those who received vitamin D3 alone. While both groups received vitamin D3, it was the addition of raloxifene that made a marked difference in enhancing bone density and reducing bone loss in the hip.

Importantly, we noted that the benefits of the combination treatment were even more pronounced among women with more severe osteopenia. However, it’s crucial to recognize that the study did not isolate the effects of vitamin D3 on its own, which limits our ability to draw conclusions about its effectiveness independently from raloxifene.

As we look at the broader implications, it seems combining these treatments could be an effective strategy for improving bone health, particularly in postmenopausal women at risk of osteoporosis.
9
Probiotic support for osteoporosis treatment
We explored how a specific probiotic strain, FSHHK13M1, affects vitamin D metabolism and osteoporosis in mice. Previous research pointed out that the gut microbiota plays a crucial role in vitamin D metabolism, which is especially relevant for older adults who tend to suffer from osteoporosis due to declining organ functions.

Our study demonstrated that treating the mice with FSHHK13M1 led to a significant increase in their serum levels of active vitamin D metabolites, particularly 1,25-dihydroxy vitamin D. This increase was linked to activation of important bone health pathways, helping to fortify bone structure and function.

Not only did we observe improvements in vitamin D levels, but the intervention also restored balance in the gut microbiota, which showed signs of imbalance in mice suffering from osteoporosis. The findings suggest that FSHHK13M1 could be a promising direction for improving bone health and reducing fracture risks in the elderly by enhancing vitamin D levels naturally.

Overall, this research highlights the potential of combining probiotics with vitamin D strategies for better management of osteoporosis, especially in older populations who often face challenges absorbing conventional treatments.
4
Vitamin D and osteoporosis treatment risks
We aimed to understand how vitamin D, when taken alongside calcium, affects individuals dealing with osteoporosis. This study involved 204 participants aged between 50 and 89 years, all receiving a specific daily dose of calcium carbonate and alfacalcidol for at least a year.

Our findings reveal an important aspect of this treatment: while calcium and vitamin D can be beneficial for bone health, there's a concerning association with kidney stone formation among users. Particularly, those with a history of recurrent kidney stones seemed to face an increased risk, which may be linked to higher urinary calcium excretion as a result of the supplements.

This highlights a dual-edged sword in osteoporosis treatment—while we seek to strengthen bones, we also have to consider potential harm. Thus, anyone considering or currently using these supplements should consult with their healthcare provider to carefully weigh the benefits against the risks, especially if they have a past of kidney stones.

References

  1. Afonso ML, Capelas ML, Pimenta NM, Santos T, Mäkitie A, et al. A Systematic Review of Vitamin D Supplementation in Oncology: Chance of Science or Effectiveness?. Nutrients. 2025;17. doi:10.3390/nu17040634
  2. Wang H, Tian G, Pei Z, Yu X, Wang Y, et al. increases serum vitamin D metabolite levels and modulates intestinal flora to alleviate osteoporosis in mice. mSphere. 2025. doi:10.1128/msphere.01039-24
  3. Skubica P, Hoffmanova I, Dankova P. Chronically increased osteoclastogenesis in adult celiac disease patients does not hinder improvement in bone health induced by gluten-free diet: Role of vitamin D, OPG and IL-6. J Nutr Biochem. 2025. doi:10.1016/j.jnutbio.2025.109871
  4. Pickering ME, Souberbielle JC, Boutten A, Breuil V, Briot K, et al. Daily or intermittent vitamin D supplementation in patients with or at risk of osteoporosis: Position statement from the GRIO. Joint Bone Spine. 2025;92:105858. doi:10.1016/j.jbspin.2025.105858
  5. Shi L, Bao Y, Deng X, Xu X, Hu J. Association between calcium and vitamin D supplementation and increased risk of kidney stone formation in patients with osteoporosis in Southwest China: a cross-sectional study. BMJ Open. 2025;15:e092901. doi:10.1136/bmjopen-2024-092901
  6. Zhang SB, Yang J, Xu HW, Yi YY, Ren CX, et al. Association Between 25-hydroxyvitamin D Status and New Vertebral Fractures Post Percutaneous Vertebral Augmentation in Patients During Postmenopause: A Retrospective Case-control Study. Pain Physician. 2025;28:E31.
  7. Yang C, Chen L, Guo X, Sun H, Miao D. The Vitamin D-Sirt1/PGC1α Axis Regulates Bone Metabolism and Counteracts Osteoporosis. J Orthop Translat. 2025;50:211. doi:10.1016/j.jot.2024.10.011
  8. Kuwabara N, Kanda J, Sato S, Nakagawa S. Impact of Daily High Ergosterol Intake for 14 Weeks in Ovariectomized Rats on Cholesterol and Vitamin D Biosynthesis Pathways. Biol Pharm Bull. 2025;48:39. doi:10.1248/bpb.b24-00536
  9. McCarrison S, Abdelrahman S, Quinlivan R, Keen R, Wong SC. Pharmacological and non-pharmacological therapies for prevention and treatment of osteoporosis in Duchenne Muscular Dystrophy: A systematic review. Bone. 2025;193:117410. doi:10.1016/j.bone.2025.117410
  10. Ma M, Zhang Y, Liu J, Tian C, Duan Z, et al. Associations of the serum 25-hydroxyvitamin D with mortality among patients in osteopenia or osteoporosis. Bone. 2025. doi:10.1016/j.bone.2025.117408
  11. 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. doi:10.3390/jcm14030958
  12. Paul T, Garg B, Kapoor N, Patil V, Kachnerkar N, et al. A Prospective, Active-controlled, Randomized, Double-blind, Multicenter, Phase III Study to Compare the Safety and Efficacy of Biosimilar Denosumab vs Reference Denosumab in the Treatment of Postmenopausal Osteoporosis. J Assoc Physicians India. 2025;73:e8. doi:10.59556/japi.73.0772
  13. Sawant D, Kamble N. Overcoming Recurrent Isolated Sleep Paralysis: A Case Report of Integrative Management With Yoga, Meditation, and Vitamin D3 Supplementation. Cureus. 2024;16:e76626. doi:10.7759/cureus.76626
  14. Kittaka A. Synthetic Studies on Vitamin D Derivatives with Diverse but Selective Biological Activities. Chem Pharm Bull (Tokyo). 2025;73:1. doi:10.1248/cpb.c24-00598
  15. Elmalah SG, Mohsen ROM, Hassan R. Selenium nano particles versus nano vitamin D3 in modulating anastrozole-induced osteoporosis on the mandibular alveolar bone of albino rats. J Stomatol Oral Maxillofac Surg. 2024. doi:10.1016/j.jormas.2024.102181
  16. Chang CH, Yang SJ, Young TH, Yao WC. Effect of co-loaded vitamin D3 on intravenous injectable raloxifene delivery system. Colloids Surf B Biointerfaces. 2025;246:114379. doi:10.1016/j.colsurfb.2024.114379
  17. Kluijver LG, Wagenmakers MAEM, Wilson JHP, Langendonk JG. The impact of minimal sunlight exposure on bone health: insights from a cohort study in erythropoietic protoporphyria. J Clin Endocrinol Metab. 2024. doi:10.1210/clinem/dgae729
  18. Chen Y, Qiu H, Xuan L, Jin Y, Chen R, et al. Acupuncture in Treating Osteopenia: A Multicenter, Randomized, Controlled Clinical Trial. Complement Med Res. 2024;31:516. doi:10.1159/000541440
  19. Moon RJ, D' Angelo S, Curtis EM, Ward KA, Crozier SR, et al. Pregnancy vitamin D supplementation and offspring bone mineral density in childhood follow-up of a randomized controlled trial. Am J Clin Nutr. 2024;120:1134. doi:10.1016/j.ajcnut.2024.09.014
  20. Pinto-Bonilla R, Baeza-Noci J, Blanco CC, Gumbau GJV, Fernández RJ, et al. Real-world effectiveness and safety of combined calcium 600 mg and cholecalciferol 2000 IU for treating vitamin d deficiency: Results from a nationwide study with focus in osteoporosis. Bone Rep. 2024;22:101796. doi:10.1016/j.bonr.2024.101796
  21. Xu D, Liu J, Zhang D, Zhang X, Huang C, et al. [Effects of thunder-fire moxibustion on balance function and musculoskeletal metabolism in female patients of primary osteoporosis with low muscle mass]. Zhongguo Zhen Jiu. 2024;44:859. doi:10.13703/j.0255-2930.20231229-0002
  22. Shin S, Hong N, Rhee Y. A randomized controlled trial of the effect of raloxifene plus cholecalciferol versus cholecalciferol alone on bone mineral density in postmenopausal women with osteopenia. JBMR Plus. 2024;8:ziae073. doi:10.1093/jbmrpl/ziae073
  23. Wu T, Lin Z, Wang C, Liu X. Correlation between vitamin D levels and blood pressure in elderly hypertensive patients with osteoporosis. Front Med (Lausanne). 2024;11:1396254. doi:10.3389/fmed.2024.1396254
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