Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 23 Researches
7.8
USERS' SCORE
Moderately Good
Based on 3 Reviews
7.8
Supplement Facts
Serving Size:  1 Vegetable Capsule
Amount Per Serving
%DV
Vitamin D3 (as cholecalciferol)
125 mcg (5000 IU)
625%

Top Medical Research Studies

8
Vitamin D aids rheumatoid arthritis
We explored how vitamin D plays a role in managing rheumatoid arthritis (RA), a condition that causes joint inflammation and discomfort. It's been found that many people with RA often suffer from vitamin D deficiency, which may worsen their symptoms and overall disease severity.

Our review indicates that vitamin D could help modulate immune responses and lower inflammation levels. Supplementing with vitamin D has shown potential in improving various disease activity markers, signaling that it could be a valuable addition to treatment strategies for RA.

Besides vitamin D, we also looked at other important vitamins like B12, C, and K. While vitamin D stands out for its immune benefits, B12 supports energy and neurological health, C helps with collagen production and inflammation reduction, and K contributes to bone health.

Together, these vitamins create a comprehensive approach to managing RA, emphasizing the need for further research to determine the best ways to use them effectively.
Read More
4
Vitamin D may aid knee OA
We set out to explore the potential benefits of vitamin D supplementation for people suffering from end-stage knee osteoarthritis (OA). Our research took the form of a double-blinded, randomized controlled trial involving 56 patients with vitamin D insufficiency. This careful design allowed us to compare the effects of vitamin D against a placebo, ensuring that neither the patients nor the assessors knew who received what treatment.

Over six months, participants in the vitamin D group took capsules containing 4,000 IU daily, while the others received a placebo. We measured muscle strength, pain levels, physical function, and signs of sarcopenia at several points: at the start, after three months, and again at the six-month mark.

We aimed to see whether this cost-effective and well-tolerated supplement could improve quality of life by boosting muscle strength and reducing pain for knee OA patients. Given the growing number of people waiting for knee replacements in Hong Kong, our findings could have significant implications for patient care.

Our study's findings may help clarify whether vitamin D supplementation is a viable option for alleviating some symptoms associated with knee osteoarthritis. With ongoing interest in non-surgical therapies, understanding the role of vitamin D (particularly in muscle health) is more relevant than ever.
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9
Vitamin D mitigates arthritis damage
We explored how vitamin D (VD) affects osteoarthritis (OA), a condition that commonly leads to joint pain and stiffness. Our research focused on the idea that vitamin D might help reduce inflammation and tissue damage driven by the NF-κB pathway, a crucial player in OA development.

To investigate this, we examined the effects of vitamin D on chondrocytes—cells responsible for cartilage health. By observing how vitamin D influences these cells, we found that it does indeed help maintain cartilage integrity. The study highlighted that vitamin D stabilizes the NF-κB pathway, which normally promotes inflammation, and by doing so, it encourages cellular processes like autophagy that are essential for keeping the cartilage healthy.

We observed significant changes in cartilage condition when vitamin D's role was emphasized, suggesting that vitamin D could be a valuable ally in managing OA symptoms. These findings recommend vitamin D as a potential therapeutic strategy for arthritis, opening new avenues for treatment options that could improve joint health and function for people dealing with this challenging condition.
Read More

Most Useful Reviews

9
Pain relief noted
2 people found this helpful
Vitamin D3 5000 has been a revelation for me. At 59, I had never considered this vitamin until I watched a video by a doctor detailing its significance. My symptoms of joint pain, particularly in my legs and fingers affected by arthritis, improved markedly. Within a week and a half, I began to sleep better, and after a month, my hip joints and finger pain subsided significantly. I'm truly delighted with the results and recommend it for its quick and effective outcomes.
Read More
2
Diminished effectiveness noted
4 people found this helpful
My hands are cramping, and arthritis is returning! I experienced hip and joint pain before being diagnosed with low vitamin D. I would wake up with cramped hands, struggling to exercise due to hip pain. After years of supplementation, I found it greatly alleviated my arthritis and shoulder pain from bursitis. I usually have success with Solgar products, but my hands have been cramping again, and my shoulder is paining. I feel this product isn't helping! I've decided to switch brands in hopes of a better outcome. Sorry, Solgar; you have lost my business on this one.
Read More
7.5
Improved wellbeing
I’m very satisfied with this product. I've been using it for a long time due to my low vitamin D3 levels caused by arthritis. Since starting this supplement, I’ve noticed a significant improvement in my condition and overall wellbeing.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 23 Researches
7.8
  • All Researches
9
Vitamin D mitigates arthritis damage
We explored how vitamin D (VD) affects osteoarthritis (OA), a condition that commonly leads to joint pain and stiffness. Our research focused on the idea that vitamin D might help reduce inflammation and tissue damage driven by the NF-κB pathway, a crucial player in OA development.

To investigate this, we examined the effects of vitamin D on chondrocytes—cells responsible for cartilage health. By observing how vitamin D influences these cells, we found that it does indeed help maintain cartilage integrity. The study highlighted that vitamin D stabilizes the NF-κB pathway, which normally promotes inflammation, and by doing so, it encourages cellular processes like autophagy that are essential for keeping the cartilage healthy.

We observed significant changes in cartilage condition when vitamin D's role was emphasized, suggesting that vitamin D could be a valuable ally in managing OA symptoms. These findings recommend vitamin D as a potential therapeutic strategy for arthritis, opening new avenues for treatment options that could improve joint health and function for people dealing with this challenging condition.
Read More
9
Vitamin D3 may improve fatigue
We conducted an insightful study to explore how vitamin D3 supplementation might affect rheumatoid arthritis (RA) symptoms, particularly focusing on disease activity and fatigue. This research involved a total of 68 RA patients who were monitored over a period of 12 weeks.

Our participants were divided into two groups. One group received a weekly dose of 50,000 IU of vitamin D3 alongside their conventional arthritis medications. The other group continued with their standard treatment regimen without any vitamin D3.

As we evaluated the outcomes, we found that the group receiving vitamin D3 exhibited significant improvements. Specifically, they showed enhanced levels of vitamin D and reported lower fatigue, as measured by the FACIT-F score. While both groups initially presented similar health characteristics, those on vitamin D3 achieved a normal range in fatigue levels compared to the continued struggle within the other group.

Interestingly, we observed a positive correlation between higher vitamin D levels and improved fatigue scores, indicating that vitamin D3 could indeed play a beneficial role in managing symptoms associated with rheumatoid arthritis. However, disease activity scores did not show a strong significant correlation with vitamin D levels, suggesting that more research may be necessary to understand this relationship fully.
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9
Vitamin D3's role in OA prevention
We explored the link between vitamin D3 and knee osteoarthritis (OA) by examining both young and older mice. Our findings revealed that a deficiency in vitamin D3, specifically the active form known as 1,25(OH)D, significantly sped up the development of age-related OA. This included issues such as cartilage damage and increased chondrocyte senescence.

When we supplemented with vitamin D3, we were pleased to see a reversal of these negative changes in OA phenotypes among the test mice. It not only improved cartilage health but also countered oxidative stress and cell aging associated with OA.

Our research highlights the important role of vitamin D3 in maintaining joint health and its potential to help prevent or slow down the onset of OA through mechanisms involving Sirt1, a gene linked to aging and cellular health. This suggests that ensuring sufficient levels of vitamin D3 could be a useful strategy for those at risk of developing arthritis.
Read More
We explored the effects of vitamin D supplementation on adults with rheumatoid arthritis (RA), an inflammatory condition affecting millions worldwide. By examining clinical studies that compared vitamin D to either a placebo or standard care, we focused on how these supplements might influence various health outcomes for those suffering from RA.

Our analysis included 11 studies, highlighting several noteworthy findings. We observed a significant improvement in key measures: the Disease Activity Score 28 (DAS-28) showed a meaningful reduction, while levels of C-reactive protein (CRP) and the erythrocyte sedimentation rate (ESR) also decreased. Furthermore, vitamin D supplementation led to an increase in serum vitamin D levels.

Despite these positive results, vitamin D supplementation did not appear to significantly impact the health assessment questionnaire (HAQ) and visual analog scale for pain (VAS-pain) scores. Consequently, while vitamin D can help reduce inflammation and improve specific health parameters in RA patients, the optimal dosage and duration of treatment remain unclear.

Overall, our findings suggest that boosting vitamin D levels might offer benefits for managing RA, and further research may help refine treatment strategies for optimal outcomes.
Read More
We aimed to understand how vitamin D deficiency impacts elderly people suffering from osteoarthritis (OA) in their hips and knees. Our study involved 105 OA patients and 152 healthy individuals to compare their vitamin D levels and functional abilities, using criteria like the WOMAC questionnaire to assess pain and functional impairment.

Our findings revealed that patients with low vitamin D levels experienced more severe OA symptoms. They reported higher pain levels and greater difficulties in daily activities compared to those with normal vitamin D levels. Furthermore, their vitamin D deficiency was associated with increased levels of inflammatory markers, TNF-α and IL-6, suggesting a link between inflammation and vitamin D status.

Ultimately, the evidence indicates that maintaining adequate vitamin D levels may be crucial in managing the symptoms of hip and knee osteoarthritis. While further research is necessary to fully understand these relationships, our results hint at the potential benefits of vitamin D supplementation to help alleviate OA symptoms and slow disease progression.
Read More

User Reviews

USERS' SCORE
Moderately Good
Based on 3 Reviews
7.8
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Pain relief noted
2 people found this helpful
Vitamin D3 5000 has been a revelation for me. At 59, I had never considered this vitamin until I watched a video by a doctor detailing its significance. My symptoms of joint pain, particularly in my legs and fingers affected by arthritis, improved markedly. Within a week and a half, I began to sleep better, and after a month, my hip joints and finger pain subsided significantly. I'm truly delighted with the results and recommend it for its quick and effective outcomes.
Read More
2
Diminished effectiveness noted
4 people found this helpful
My hands are cramping, and arthritis is returning! I experienced hip and joint pain before being diagnosed with low vitamin D. I would wake up with cramped hands, struggling to exercise due to hip pain. After years of supplementation, I found it greatly alleviated my arthritis and shoulder pain from bursitis. I usually have success with Solgar products, but my hands have been cramping again, and my shoulder is paining. I feel this product isn't helping! I've decided to switch brands in hopes of a better outcome. Sorry, Solgar; you have lost my business on this one.
Read More
7.5
Improved wellbeing
I’m very satisfied with this product. I've been using it for a long time due to my low vitamin D3 levels caused by arthritis. Since starting this supplement, I’ve noticed a significant improvement in my condition and overall wellbeing.
Read More

Frequently Asked Questions

9
Pain relief noted
2 people found this helpful
Vitamin D3 5000 has been a revelation for me. At 59, I had never considered this vitamin until I watched a video by a doctor detailing its significance. My symptoms of joint pain, particularly in my legs and fingers affected by arthritis, improved markedly. Within a week and a half, I began to sleep better, and after a month, my hip joints and finger pain subsided significantly. I'm truly delighted with the results and recommend it for its quick and effective outcomes.
7.5
Improved wellbeing
I’m very satisfied with this product. I've been using it for a long time due to my low vitamin D3 levels caused by arthritis. Since starting this supplement, I’ve noticed a significant improvement in my condition and overall wellbeing.
We explored the effects of vitamin D supplementation on adults with rheumatoid arthritis (RA), an inflammatory condition affecting millions worldwide. By examining clinical studies that compared vitamin D to either a placebo or standard care, we focused on how these supplements might influence various health outcomes for those suffering from RA.

Our analysis included 11 studies, highlighting several noteworthy findings. We observed a significant improvement in key measures: the Disease Activity Score 28 (DAS-28) showed a meaningful reduction, while levels of C-reactive protein (CRP) and the erythrocyte sedimentation rate (ESR) also decreased. Furthermore, vitamin D supplementation led to an increase in serum vitamin D levels.

Despite these positive results, vitamin D supplementation did not appear to significantly impact the health assessment questionnaire (HAQ) and visual analog scale for pain (VAS-pain) scores. Consequently, while vitamin D can help reduce inflammation and improve specific health parameters in RA patients, the optimal dosage and duration of treatment remain unclear.

Overall, our findings suggest that boosting vitamin D levels might offer benefits for managing RA, and further research may help refine treatment strategies for optimal outcomes.
We aimed to understand how vitamin D deficiency impacts elderly people suffering from osteoarthritis (OA) in their hips and knees. Our study involved 105 OA patients and 152 healthy individuals to compare their vitamin D levels and functional abilities, using criteria like the WOMAC questionnaire to assess pain and functional impairment.

Our findings revealed that patients with low vitamin D levels experienced more severe OA symptoms. They reported higher pain levels and greater difficulties in daily activities compared to those with normal vitamin D levels. Furthermore, their vitamin D deficiency was associated with increased levels of inflammatory markers, TNF-α and IL-6, suggesting a link between inflammation and vitamin D status.

Ultimately, the evidence indicates that maintaining adequate vitamin D levels may be crucial in managing the symptoms of hip and knee osteoarthritis. While further research is necessary to fully understand these relationships, our results hint at the potential benefits of vitamin D supplementation to help alleviate OA symptoms and slow disease progression.
We investigated how vitamin D3 supplementation affects symptoms in patients dealing with knee osteoarthritis (OA). This was an open-label clinical trial conducted over three months, where participants received 4000 IU of vitamin D3 daily. We measured clinical responses at the beginning and after three months using specific assessment tools.

Our findings were promising, as we saw a notable drop in pain levels and improvements in stiffness and physical function based on patient reports. Out of the 80 patients who completed the study, an impressive 86.7% showed a positive response to treatment, indicating that vitamin D3 could play a beneficial role in managing OA symptoms.

Interestingly, while vitamin D3 supplementation raised serum levels of certain inflammatory markers, specifically IL-33, it also led to significant reductions in other pro-inflammatory cytokines like TNF-α and IL-17. No adverse effects were reported during the trial, underscoring the safety profile of vitamin D3.

In conclusion, our results suggest that vitamin D3 is a promising option for easing symptoms in knee OA, and further research is warranted to explore the implications of altered inflammatory markers in the disease process.
8
Vitamin D aids knee osteoarthritis
We investigated how vitamin D affects arthritis, specifically focusing on knee osteoarthritis (OA) using a rat model. In our study, male Wistar rats were divided into five groups to evaluate the effects of curcumin, vitamin D, and their combination over 12 weeks.

Both vitamin D and curcumin independently reduced pain in the rats. However, when combined, they provided enhanced pain relief. We observed that vitamin D, alongside curcumin, showed promising results by reducing inflammation and improving joint health. The treatment groups exhibited lower levels of pro-inflammatory cytokines and higher levels of the anti-inflammatory cytokine interleukin-10 (IL-10).

Importantly, the supplements also helped restore some antioxidative markers and led to a significant reduction in the oxidative stress marker known as Cartilage Oligomeric Matrix Protein (COMP). Histological examinations revealed that those treated with vitamin D and curcumin maintained better cartilage integrity and had reduced inflammation in the synovium.

Overall, our findings suggest that vitamin D, particularly in combination with curcumin, could play a vital role in managing knee OA by addressing both pain and the underlying inflammation, making it a potential option for arthritis treatment in clinical settings.

References

  1. Ranjbar M, Rahimlou M, Fallah M, Djafarian K, Mohammadi H. Effects of vitamin D supplementation in patients with rheumatoid arthritis: A systematic review and meta-analysis. Heliyon. 2025;11:e42463. doi:10.1016/j.heliyon.2025.e42463
  2. Montemor CN, Fernandes MTP, Marquez AS, Bignardi PR, Poli RC, et al. Impact of Reduced Vitamin D Levels on Pain, Function, and Severity in Knee or Hip Osteoarthritis. Nutrients. 2025;17. doi:10.3390/nu17030447
  3. Mende LK, Kuthati Y, Wong CS. Curcumin and Vitamin D Supplement Attenuates Knee Osteoarthritis Progression in ACLT + MMx Rat Model: Effect on Cartilage Protection and Pain Reduction. Nutrients. 2025;17. doi:10.3390/nu17020349
  4. Arellano Pérez Vertti RD, Arellano Ramírez DO, González Galarza FF, Prieto Hinojosa AI, Méndez Hernández A, et al. "Association of vitamin D blood deficiency and the rs731236 polymorphism vitamin D receptor with primary knee osteoarthritis in subjects from Mexico". Clin Rheumatol. 2025;44:1329. doi:10.1007/s10067-025-07332-z
  5. 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. doi:10.1016/j.transproceed.2024.12.020
  6. Liu P, Zhou J, Cui H, Xu J, Ruan G, et al. 1,25(OH)D induces chondrocyte autophagy and reduces the loss of proteoglycans in osteoarthritis through inhibiting the NF-κB pathway. Clin Rheumatol. 2025;44:811. doi:10.1007/s10067-024-07281-z
  7. Hijjawi N, Tout FS, Azaizeh B, Aljaafreh B. The role of vitamins D, B12, C, and K in modulating inflammation and disease management in rheumatoid arthritis: a comprehensive review. Clin Rheumatol. 2025;44:591. doi:10.1007/s10067-024-07285-9
  8. Gottreich JR, Katz JN, Jones MH. Nonsurgical Knee Osteoarthritis Treatments for Reducing Inflammation as Measured on MRI Scans: A Systematic Review of Randomized Controlled Trials. Orthop J Sports Med. 2024;12:23259671241272667. doi:10.1177/23259671241272667
  9. Zuo A, Jia Q, Zhang M, Zhou X, Li T, et al. The association of vitamin D with knee osteoarthritis pain: an analysis from the Osteoarthritis Initiative database. Sci Rep. 2024;14:30176. doi:10.1038/s41598-024-81845-6
  10. 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. doi:10.2478/aite-2024-0023
  11. Cai Z, Zhang Z, Leng J, Xie M, Zhang K, et al. β-Hydroxybutyrate ameliorates osteoarthritis through activation of the ERBB3 signaling pathway in mice. J Bone Miner Res. 2024;40:140. doi:10.1093/jbmr/zjae176
  12. Luo H, Zhang Y, Meng C, Li C, Jia D, et al. The effect of copper and vitamin D on osteoarthritis outcomes: A Mendelian randomization study. Medicine (Baltimore). 2024;103:e39828. doi:10.1097/MD.0000000000039828
  13. Zang K, Bhatia R, Xue E, Bennett KJ, Luo KH, et al. Vitamin D as a Modifiable Risk Factor for Juvenile Idiopathic Arthritis: A Systematic Review and Meta-analysis of Observational Studies Comparing Baseline Vitamin D in Children with JIA to Individuals Without. Nutr Rev. 2024. doi:10.1093/nutrit/nuae148
  14. Kirikovich SS, Levites EV, Proskurina AS, Ritter GS, Dolgova EV, et al. Production of GcMAF with Anti-Inflammatory Properties and Its Effect on Models of Induced Arthritis in Mice and Cystitis in Rats. Curr Issues Mol Biol. 2024;46:10934. doi:10.3390/cimb46100650
  15. Feng Y, Zhu P, Yan D, Wang X, Chen C, et al. Implications of vitamin D levels or status for mortality in rheumatoid arthritis: analysis of 2001-2018 data from the National Health and Nutrition Examination Survey. Front Immunol. 2024;15:1425119. doi:10.3389/fimmu.2024.1425119
  16. Wang QW, Ong MT, Man GC, Yeung YM, He X, et al. The effectiveness of vitamin D supplementation in patients with end-stage knee osteoarthritis: Study protocol for a double-blinded, randomized controlled trial. PLoS One. 2024;19:e0309610. doi:10.1371/journal.pone.0309610
  17. Elfituri S. The effects of vitamin D supplementation on disease activity and fatigue in Libyan rheumatoid arthritis patients. Reumatologia. 2024;62:109. doi:10.5114/reum/187391
  18. Kim S, Chen N, Reid P. Current and future advances in practice: aromatase inhibitor-induced arthralgia. Rheumatol Adv Pract. 2024;8:rkae024. doi:10.1093/rap/rkae024
  19. Tekeli SÖ, Köse Ö, Yapar D, Tekeli FY, Asoğlu MM, et al. Relationship between serum vitamin D levels and the prevalence of knee osteoarthritis: A retrospective study on 3424 subjects. Technol Health Care. 2024;32:3649. doi:10.3233/THC-230802
  20. Huovinen J, Palosaari S, Pesonen P, Huhtakangas JA, Lehenkari P. 1,25(OH)D and its analogue calcipotriol inhibit the migration of human synovial and mesenchymal stromal cells in a wound healing model - A comparison with glucocorticoids. J Steroid Biochem Mol Biol. 2023;233:106373. doi:10.1016/j.jsbmb.2023.106373
  21. Zhu W, Zhu Y, Zhang S, Zhang W, Si Z, et al. 1,25-Dihydroxyvitamin D regulates macrophage activation through FBP1/PKR and ameliorates arthritis in TNF-transgenic mice. J Steroid Biochem Mol Biol. 2023;228:106251. doi:10.1016/j.jsbmb.2023.106251
  22. Chen J, Zhang J, Li J, Qin R, Lu N, et al. 1,25-Dihydroxyvitamin D Deficiency Accelerates Aging-related Osteoarthritis via Downregulation of Sirt1 in Mice. Int J Biol Sci. 2023;19:610. doi:10.7150/ijbs.78785
  23. Divjak A, Jovanovic I, Matic A, Lucic AT, Gajovic N, et al. The influence of vitamin D supplementation on the expression of mediators of inflammation in knee osteoarthritis. Immunol Res. 2023;71:442. doi:10.1007/s12026-022-09354-0
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