Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.2
USERS' SCORE
Good
Based on 18 Reviews
8.2
Supplement Facts
Serving Size: 1 Capsule
Amount Per Serving
%DV
Vitamin D3 (as cholecalciferol)
125 mcg
625%
Vitamin K activity from:Vitamin K1 (as phytonadione)Vitamin K2 (as menaquinone-4)Vitamin K2 (as trans menaquinone-7)
2,100 mcg1,000 mcg1,000 mcg100 mcg
1,750%
Iodine [from Sea-Iodine™ Complex Blend (organic kelp and bladderwrack extracts, potassium iodide)]
1,000 mcg
667%

Top Medical Research Studies

9
Vitamin D3 improves depressive symptoms
We conducted a double-blind randomized clinical trial to explore the effects of vitamin D3 supplementation on depression. Our study involved 56 adults with mild to moderate depression, who were assigned to either a vitamin D group or a placebo group. Over the course of eight weeks, the vitamin D group received a high dose of 50,000 IU cholecalciferol every two weeks, while the control group received a placebo.

After the treatment period, we observed that the participants who received the vitamin D3 experienced a significant reduction in depression severity, as measured by the Beck Depression Inventory-II. Interestingly, this improvement in mood occurred independently of any changes in inflammatory biomarkers like IL-1β, IL-6, and hs-CRP, which we also assessed during the study.

This indicates that while vitamin D supplementation may positively impact depressive symptoms, its effects are not directly linked to the inflammatory markers we evaluated. Our findings suggest that vitamin D3 could be a helpful addition to depression treatment strategies, particularly in individuals with low vitamin D levels.
Read More
9.5
Cholecalciferol eases depression symptoms
We conducted a thorough exploration of how vitamin D3, or cholecalciferol, affects depressive symptoms in patients with type 2 diabetes mellitus (T2DM). This double-blind, randomized, placebo-controlled trial involved 70 participants who experienced both T2DM and depression. For 12 weeks, one group received a daily dose of 4000 IU of cholecalciferol, while the other group received a placebo.

By assessing depression levels using the Beck Depression Inventory-II before and after the study, we observed notable results. Not only did the cholecalciferol group report a significant reduction in depression scores, but we found a marked increase in C-peptide levels as well, which may be linked to improvements in mood.

However, we did not find significant changes in serotonin and neurotrophin-3 levels between the two groups, leaving us with some unanswered questions about these mechanisms. Overall, our findings suggest that supplementing with cholecalciferol could potentially relieve mild to moderate depressive symptoms for people managing T2DM, especially through enhanced C-peptide levels.
Read More
We conducted a thoughtful study to investigate whether vitamin D3 supplementation could help improve depression scores among rural adolescents. Over three years, we ran a well-structured randomized controlled trial including a group of 150 participants who received either a higher dose of 2250 IU of vitamin D3 or a lower dose of 250 IU.

Before starting, we assessed both the vitamin D levels and depression symptoms of participants to create a solid baseline for comparison. Throughout the study, participants were regularly checked on by our pediatric team to monitor any side effects from the treatment.

Our findings aimed to shed light on the connection between vitamin D deficiency and mental health issues. Ultimately, we observed that those who received vitamin D3 supplementation showed a notable reduction in depression scores. This suggests that addressing nutritional deficits may offer a promising avenue for supporting mental health in young people, potentially enhancing their overall well-being.
Read More

Most Useful Reviews

10
Depression relief
I ordered this for my mother, and she became more energetic in the mornings; her depression has subsided.
Read More
9
Fatigue alleviated
Fatigue and depression have faded, which is very important for me. I combine it with Omega and find it very effective.
Read More
9
Improved mood noted
After starting a vitamin D & K supplement, I was impressed with its benefits, particularly my overall health. I noticed reduced joint pain and increased energy, along with greater mental clarity. My mood improved as I became less anxious and depressed, and additional health check-ups showed improved cardiovascular health. I highly recommend this supplement for overall improvement.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.2
  • All Researches
9.5
Cholecalciferol eases depression symptoms
We conducted a thorough exploration of how vitamin D3, or cholecalciferol, affects depressive symptoms in patients with type 2 diabetes mellitus (T2DM). This double-blind, randomized, placebo-controlled trial involved 70 participants who experienced both T2DM and depression. For 12 weeks, one group received a daily dose of 4000 IU of cholecalciferol, while the other group received a placebo.

By assessing depression levels using the Beck Depression Inventory-II before and after the study, we observed notable results. Not only did the cholecalciferol group report a significant reduction in depression scores, but we found a marked increase in C-peptide levels as well, which may be linked to improvements in mood.

However, we did not find significant changes in serotonin and neurotrophin-3 levels between the two groups, leaving us with some unanswered questions about these mechanisms. Overall, our findings suggest that supplementing with cholecalciferol could potentially relieve mild to moderate depressive symptoms for people managing T2DM, especially through enhanced C-peptide levels.
Read More
9
Calcitriol impacts depression positively
We explored how calcitriol, the active form of vitamin D3, impacts depression linked to neuroinflammation. Using a well-structured study with control and experimental groups, we examined the effects of calcitriol on mice exposed to lipopolysaccharide (LPS), a substance that induces depressive-like behavior and neuroinflammation.

During our experiments, we found that calcitriol not only reduced the inflammatory response in brain cells but also improved behavioral symptoms associated with depression. In particular, it lowered the levels of inflammation-related molecules while promoting anti-inflammatory ones in the brain's hippocampus, an area important for mood and memory.

We observed that calcitriol helped alleviate some of the negative behavioral effects triggered by LPS. The treatment also appeared to prevent the activation of microglia, the brain's immune cells, by interfering with a specific signaling pathway involved in inflammation.

Overall, our findings suggest that vitamin D3 could offer promising benefits as a treatment for depression by tackling neuroinflammation and protecting neuronal health.
Read More
We looked at how vitamin D3 could help combat depression, especially in the context of chronic stress. The study involved 40 male Wistar rats, divided into different groups to compare the effects of vitamin D3, the antidepressant fluoxetine, and a combination of both.

The rats underwent 21 days of mild but unpredictable stress, simulating conditions often linked to depression. To measure the effects, we conducted several behavioral tests and collected blood samples to assess hormonal changes.

Results showed that vitamin D3 had a positive impact similar to fluoxetine on the rats' depressive behaviors. Specifically, we found that vitamin D3 improved results in key behavioral tests, suggesting it can help protect against stress-induced anxiety and depression.

Notably, the levels of corticosterone, a stress hormone, were lower in rats that received vitamin D3, indicating a protective effect. Overall, this study emphasizes the potential of vitamin D3 in alleviating depressive symptoms resulting from chronic stress.
Read More
9
Vitamin D3 improves depressive symptoms
We conducted a double-blind randomized clinical trial to explore the effects of vitamin D3 supplementation on depression. Our study involved 56 adults with mild to moderate depression, who were assigned to either a vitamin D group or a placebo group. Over the course of eight weeks, the vitamin D group received a high dose of 50,000 IU cholecalciferol every two weeks, while the control group received a placebo.

After the treatment period, we observed that the participants who received the vitamin D3 experienced a significant reduction in depression severity, as measured by the Beck Depression Inventory-II. Interestingly, this improvement in mood occurred independently of any changes in inflammatory biomarkers like IL-1β, IL-6, and hs-CRP, which we also assessed during the study.

This indicates that while vitamin D supplementation may positively impact depressive symptoms, its effects are not directly linked to the inflammatory markers we evaluated. Our findings suggest that vitamin D3 could be a helpful addition to depression treatment strategies, particularly in individuals with low vitamin D levels.
Read More
We conducted a thoughtful study to investigate whether vitamin D3 supplementation could help improve depression scores among rural adolescents. Over three years, we ran a well-structured randomized controlled trial including a group of 150 participants who received either a higher dose of 2250 IU of vitamin D3 or a lower dose of 250 IU.

Before starting, we assessed both the vitamin D levels and depression symptoms of participants to create a solid baseline for comparison. Throughout the study, participants were regularly checked on by our pediatric team to monitor any side effects from the treatment.

Our findings aimed to shed light on the connection between vitamin D deficiency and mental health issues. Ultimately, we observed that those who received vitamin D3 supplementation showed a notable reduction in depression scores. This suggests that addressing nutritional deficits may offer a promising avenue for supporting mental health in young people, potentially enhancing their overall well-being.
Read More

User Reviews

USERS' SCORE
Good
Based on 18 Reviews
8.2
  • All Reviews
  • Positive Reviews
  • Negative Reviews
10
Depression relief
I ordered this for my mother, and she became more energetic in the mornings; her depression has subsided.
Read More
9
Fatigue alleviated
Fatigue and depression have faded, which is very important for me. I combine it with Omega and find it very effective.
Read More
9
Improved mood noted
After starting a vitamin D & K supplement, I was impressed with its benefits, particularly my overall health. I noticed reduced joint pain and increased energy, along with greater mental clarity. My mood improved as I became less anxious and depressed, and additional health check-ups showed improved cardiovascular health. I highly recommend this supplement for overall improvement.
Read More
9
Mood enhancement
The best vitamin D I've had, small and easy to swallow with excellent quality. During autumn-winter, I experienced significant blues and signs of depression. After trying vitamin D, my mood improved dramatically, and my desire to live returned.
Read More
9
Melancholy lifted
I’ve been taking this for years. In a previous winter of darkness, I nearly succumbed to depression but found vitamin D3 removed my melancholy within days, and I’ve continued its use annually.
Read More

Frequently Asked Questions

9
Melancholy lifted
I’ve been taking this for years. In a previous winter of darkness, I nearly succumbed to depression but found vitamin D3 removed my melancholy within days, and I’ve continued its use annually.
9
Lethargy reduction
After two weeks of taking this supplement, I started to feel much better. My feelings of depression and lethargy gradually diminished, and I felt motivated to be active again.
9
Mood enhancement
The best vitamin D I've had, small and easy to swallow with excellent quality. During autumn-winter, I experienced significant blues and signs of depression. After trying vitamin D, my mood improved dramatically, and my desire to live returned.
10
Depression relief
I ordered this for my mother, and she became more energetic in the mornings; her depression has subsided.
9
Fatigue alleviated
Fatigue and depression have faded, which is very important for me. I combine it with Omega and find it very effective.
7.5
Reduced anxiety
I take vitamin D, K, and iodine daily to assist with anxiety and depression, as well as to enhance my thyroid function.
7
Vitamin D3 may alleviate depression
We explored the impact of vitamin D3 supplementation on depression through a systematic review of randomized controlled trials. Our analysis included data from 31 studies involving nearly 24,200 participants.

The findings revealed that taking an additional 1000 IU of vitamin D daily can lead to a modest reduction in depressive symptoms. Specifically, those with existing depressive symptoms experienced a more significant improvement. Notably, at higher doses of 8000 IU per day, the reduction was even more pronounced.

Interestingly, the benefits were more evident in the short term, especially during trials that lasted between 8 and 24 weeks. After this period, the effects seemed to diminish, suggesting the need for ongoing supplementation to maintain benefits.

It's important to mention that vitamin D3 did not show any significant effects on anxiety symptoms. While the results indicate a potential role for vitamin D3 in reducing depression, further high-quality research is necessary to fully understand its impact, particularly regarding anxiety.
9.5
Cholecalciferol eases depression symptoms
We conducted a thorough exploration of how vitamin D3, or cholecalciferol, affects depressive symptoms in patients with type 2 diabetes mellitus (T2DM). This double-blind, randomized, placebo-controlled trial involved 70 participants who experienced both T2DM and depression. For 12 weeks, one group received a daily dose of 4000 IU of cholecalciferol, while the other group received a placebo.

By assessing depression levels using the Beck Depression Inventory-II before and after the study, we observed notable results. Not only did the cholecalciferol group report a significant reduction in depression scores, but we found a marked increase in C-peptide levels as well, which may be linked to improvements in mood.

However, we did not find significant changes in serotonin and neurotrophin-3 levels between the two groups, leaving us with some unanswered questions about these mechanisms. Overall, our findings suggest that supplementing with cholecalciferol could potentially relieve mild to moderate depressive symptoms for people managing T2DM, especially through enhanced C-peptide levels.
We set out to explore the effects of vitamin D supplementation, particularly vitamin D3, on depression and related conditions. In our analysis, we reviewed data from six randomized clinical trials with a total of 356 participants.

Surprisingly, our findings showed no significant changes in serotonin levels between those who took vitamin D supplements and those who did not. This lack of impact indicates that vitamin D3 might not play a crucial role in managing depression, at least not through its effects on serotonin.

The trials we examined included a variety of groups, such as children and individuals with autism spectrum disorders, but none showed a noteworthy benefit from vitamin D supplementation either.

While the results may seem disappointing, they do highlight the need for further research to better understand the potential role of vitamin D in mental health. We believe exploring other avenues could provide new insights into treating depression and associated disorders.
We investigated whether vitamin D supplementation could help reduce depressive symptoms and lower the likelihood of needing antidepressants in older Australian adults. The D-Health Trial, which involved over 21,000 participants aged between 60 and 84, provided a solid platform for our research. This trial was carefully designed, using a randomized, double-blind, placebo-controlled approach, which is the gold standard in clinical research.

Participants answered the Patient Health Questionnaire (PHQ-9) to measure their depressive symptoms multiple times over five years, while national prescribing records allowed us to track the use of antidepressants.

Our findings revealed that monthly vitamin D supplementation did not show any significant benefits for alleviating depression overall. The average difference in PHQ-9 scores between the vitamin D and placebo groups was negligible. Moreover, the incidence of antidepressant use in both groups remained quite similar.

However, when we looked closer, some interesting trends emerged. For individuals already on antidepressants at the start of the study, vitamin D did seem to improve their depression scores slightly. Additionally, participants with low vitamin D levels at the outset showed a decrease in the risk of starting antidepressants after supplementation. Unfortunately, those with sufficient vitamin D levels saw an increased risk of antidepressant use.

Thus, while we didn’t find strong support for vitamin D's effectiveness against depression in general, our subgroup analyses suggest there might be some nuances worth exploring further.
9
Vitamin D3 improves depressive symptoms
We conducted a double-blind randomized clinical trial to explore the effects of vitamin D3 supplementation on depression. Our study involved 56 adults with mild to moderate depression, who were assigned to either a vitamin D group or a placebo group. Over the course of eight weeks, the vitamin D group received a high dose of 50,000 IU cholecalciferol every two weeks, while the control group received a placebo.

After the treatment period, we observed that the participants who received the vitamin D3 experienced a significant reduction in depression severity, as measured by the Beck Depression Inventory-II. Interestingly, this improvement in mood occurred independently of any changes in inflammatory biomarkers like IL-1β, IL-6, and hs-CRP, which we also assessed during the study.

This indicates that while vitamin D supplementation may positively impact depressive symptoms, its effects are not directly linked to the inflammatory markers we evaluated. Our findings suggest that vitamin D3 could be a helpful addition to depression treatment strategies, particularly in individuals with low vitamin D levels.

References

  1. Putranto R, Setiati S, Nasrun MW, Witjaksono F, Immanuel S, et al. Effects of cholecalciferol supplementation on depressive symptoms, C-peptide, serotonin, and neurotrophin-3 in type 2 diabetes mellitus: A double-blind, randomized, placebo-controlled trial. Narra J. 2024;4:e1342. 10.52225/narra.v4i3.1342
  2. Ghaemi S, Zeraattalab-Motlagh S, Jayedi A, Shab-Bidar S. The effect of vitamin D supplementation on depression: a systematic review and dose-response meta-analysis of randomized controlled trials. Psychol Med. 2024;54:1. 10.1017/S0033291724001697
  3. Alimohammadi-Kamalabadi M, Ziaei S, Hasani M, Mohammadi S, Mehrbod M, et al. Does vitamin D supplementation impact serotonin levels? A systematic review and meta-analysis. Health Sci Rep. 2024;7:e2276. 10.1002/hsr2.2276
  4. Satyanarayana PT, Suryanarayana R, Yesupatham ST, Varadapuram Ramalingareddy SR, Gopalli NA. Does Vitamin D3 Supplementation Improve Depression Scores among Rural Adolescents? A Randomized Controlled Trial. Nutrients. 2024;16. 10.3390/nu16121828
  5. Renteria KM, Constantine E, Teoh CM, Cooper A, Lozano N, et al. Combination of vitamin D and fructooligosaccharides upregulates colonic vitamin D receptor in C57BL/6J mice and affects anxiety-related behavior in a sex-specific manner. Nutr Res. 2024;125:16. 10.1016/j.nutres.2024.02.003
  6. Wang C, Cui C, Xie X, Chen B, Feng L, et al. Calcitriol attenuates lipopolysaccharide-induced neuroinflammation and depressive-like behaviors by suppressing the P2X7R/NLRP3/caspase-1 pathway. Psychopharmacology (Berl). 2024;241:1329. 10.1007/s00213-024-06565-1
  7. Ceolin G, Moreira JD, Quialheiro A, Silva AAM, d'Orsi E, et al. Vitamin D serum concentration is prospectively associated with depressive symptoms in the EpiFloripa Aging Cohort Study: a structural equation modeling approach. Braz J Psychiatry. 2024;46:e20233153. 10.47626/1516-4446-2023-3153
  8. Sirasangi MI, Roohi TF, Krishna KL, Kinattingal N, Wani SUD, et al. Dietary Co-supplements attenuate the chronic unpredictable mild stress-induced depression in mice. Behav Brain Res. 2024;459:114788. 10.1016/j.bbr.2023.114788
  9. Evanchuk JL, Kozyrskyj A, Vaghef-Mehrabani E, Lamers Y, Giesbrecht GF, et al. Maternal Iron and Vitamin D Status during the Second Trimester Is Associated with Third Trimester Depression Symptoms among Pregnant Participants in the APrON Cohort. J Nutr. 2024;154:174. 10.1016/j.tjnut.2023.10.029
  10. Al-Ramadhan FR, Abulmeaty MMA, Alquraishi M, Razak S, Alhussain MH. Effect of Vitamin D3 on Depressive Behaviors of Rats Exposed to Chronic Unpredictable Mild Stress. Biomedicines. 2023;11. 10.3390/biomedicines11082112
  11. Vyas CM, Mischoulon D, Chang G, Reynolds CF, Cook NR, et al. Relation of serum BDNF to major depression and exploration of mechanistic roles of serum BDNF in a study of vitamin D3 and omega-3 supplements for late-life depression prevention. J Psychiatr Res. 2023;163:357. 10.1016/j.jpsychires.2023.05.069
  12. Sandboge S, Räikkönen K, Lahti-Pulkkinen M, Hauta-Alus H, Holmlund-Suila E, et al. Effect of Vitamin D3 Supplementation in the First 2 Years of Life on Psychiatric Symptoms at Ages 6 to 8 Years: A Randomized Clinical Trial. JAMA Netw Open. 2023;6:e2314319. 10.1001/jamanetworkopen.2023.14319
  13. Lisakovska O, Labudzynskyi D, Khomenko A, Isaev D, Savotchenko A, et al. Brain vitamin D-auto/paracrine system in relation to structural, neurophysiological, and behavioral disturbances associated with glucocorticoid-induced neurotoxicity. Front Cell Neurosci. 2023;17:1133400. 10.3389/fncel.2023.1133400
  14. Tarikere Satyanarayana P, Suryanarayana R, Theophilus Yesupatham S, Reddy S, Reddy N. Is Sunshine Vitamin Related to Adolescent Depression? A Cross-Sectional Study of Vitamin D Status and Depression Among Rural Adolescents. Cureus. 2023;15:e34639. 10.7759/cureus.34639
  15. Rahman ST, Waterhouse M, Romero BD, Baxter C, English DR, et al. Effect of vitamin D supplementation on depression in older Australian adults. Int J Geriatr Psychiatry. 2023;38:e5847. 10.1002/gps.5847
  16. Kaviani M, Nikooyeh B, Etesam F, Behnagh SJ, Kangarani HM, et al. Effects of vitamin D supplementation on depression and some selected pro-inflammatory biomarkers: a double-blind randomized clinical trial. BMC Psychiatry. 2022;22:694. 10.1186/s12888-022-04305-3
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