Last update
5/6/2025
Research Authors

Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 5 Researches
8
USERS' SCORE
Medium or Average
Based on 29 Reviews
6.2
Supplement Facts
Serving Size:   1 Softgel
Amount Per Serving
%DV
Vitamin D3 (as Cholecalciferol) (from Lanolin)
125 mcg (5,000 IU)
625%

Top Medical Research Studies

8
Vitamin D benefits for insomnia
We set out to explore the relationship between vitamin D and insomnia by examining how low-fat milk and yogurt fortified with 1,500 IU of nano-encapsulated vitamin D could improve sleep issues and overall quality of life.

In our analysis, we included adults with abdominal obesity and a history of insomnia, identifying twenty-nine participants through insomnia severity questionnaires. They were split into four groups: one receiving fortified low-fat milk, another with unfortified milk, a third group consuming fortified yogurt, and a fourth with unfortified yogurt. Over a ten-week period, we tracked changes in insomnia symptoms and quality of life.

Our findings revealed that those drinking the vitamin D fortified milk experienced significant improvements in insomnia scores compared to those consuming regular milk. Additionally, quality of life assessments showed positive changes for both fortified and unfortified milk groups. However, the yogurt groups did not demonstrate significant benefits, indicating that while fortified dairy has potential, yogurt may not be as effective in this context.

In conclusion, incorporating fortified low-fat milk into our diets could help ease insomnia symptoms and enhance life satisfaction, although yogurt did not show the same promise.
Read More
We studied how high-dose vitamin D3 supplementation might affect insomnia in adolescent girls. Over nine weeks, 940 participants received a weekly dose of 50,000 IU of vitamin D3 while we tracked changes in their sleep patterns.

Interestingly, we observed a notable reduction in insomnia rates after the treatment. The number of girls reporting insomnia dropped from 15.0% to 11.3%, indicating that this vitamin can potentially improve sleep quality.

We also noticed a slight decrease in daytime sleepiness, with cases falling from 15.6% to 14.7%. Furthermore, those experiencing both insomnia and sleepiness saw a decline from 8.0% to 6.1%.

These findings suggest that high-dose vitamin D can play a significant role in alleviating sleep issues among adolescent girls. However, further studies are needed to see if these effects are consistent across diverse age and gender groups.
Read More
8
Vitamin D's impact on sleep disorders
We explored the case of an emmetropic woman experiencing excessive daytime sleepiness alongside insomnia, which aligned with the criteria for a non-24 h sleep-wake disorder. After traditional treatments failed, we discovered deficiencies in vitamin B12, vitamin D3, and folic acid.

Upon supplementing these nutrients, we observed a restoration of a 24-hour sleep-wake rhythm in the participant. Interestingly, this improvement occurred independently of the natural light-dark cycle, raising questions about the specific impact of vitamin D on sleep patterns.

While our study underscores how addressing vitamin deficiencies can influence sleep, it also leaves us pondering whether vitamin D plays a direct role as an essential factor or if it merely acts as a concurrent indicator of overall health.
Read More

Most Useful Reviews

0
Persistent insomnia
160 people found this helpful
After two weeks of taking it, I developed insomnia that lasted over a month. Although I experienced increased energy, I couldn't sleep a full night.
Read More
9
Improved sleep quality
87 people found this helpful
I had a significant lack of vitamin D, leading to lethargy, apathy, and insomnia. When I discovered my low levels, I started taking these small capsules. There were no side effects, and my condition began to improve. I now take one capsule daily with my family and can sleep better.
Read More
9
Sleep improvement
73 people found this helpful
The capsules did not cause me insomnia; on the contrary, they improved my sleep and overall well-being significantly—much better than drops. Highly recommend for those deficient.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 5 Researches
8
  • All Researches
9
Vitamin D3 effects on insomnia unclear
We conducted a controlled study to understand the effects of vitamin D3, along with other components, on insomnia and other symptoms experienced by menopausal women. Over 24 weeks, participants took either a formulation that included vitamin D3 or a standard calcium and vitamin D3 supplement.

Throughout the study, we tracked various symptoms like insomnia and mood changes. We found that while the formulation containing vitamin D3 showed some promise for addressing hormonal symptoms such as hot flashes and mood disturbances, the specific impact of vitamin D3 on insomnia was not isolated enough to draw definitive conclusions.

Importantly, participants who took the formulation reported improvements in overall well-being and satisfaction compared to those on regular calcium and vitamin D3. However, determining the isolated benefits of vitamin D3 alone remains challenging, as it was part of a broader mix of ingredients aimed at alleviating multiple menopause-related symptoms.

Thus, while our findings highlight the potential benefits of a comprehensive approach, the role of vitamin D3 specifically on insomnia is still uncertain. Further studies would be needed to clarify its effectiveness.
Read More
8
Vitamin D's impact on sleep disorders
We explored the case of an emmetropic woman experiencing excessive daytime sleepiness alongside insomnia, which aligned with the criteria for a non-24 h sleep-wake disorder. After traditional treatments failed, we discovered deficiencies in vitamin B12, vitamin D3, and folic acid.

Upon supplementing these nutrients, we observed a restoration of a 24-hour sleep-wake rhythm in the participant. Interestingly, this improvement occurred independently of the natural light-dark cycle, raising questions about the specific impact of vitamin D on sleep patterns.

While our study underscores how addressing vitamin deficiencies can influence sleep, it also leaves us pondering whether vitamin D plays a direct role as an essential factor or if it merely acts as a concurrent indicator of overall health.
Read More
8
Vitamin D benefits for insomnia
We set out to explore the relationship between vitamin D and insomnia by examining how low-fat milk and yogurt fortified with 1,500 IU of nano-encapsulated vitamin D could improve sleep issues and overall quality of life.

In our analysis, we included adults with abdominal obesity and a history of insomnia, identifying twenty-nine participants through insomnia severity questionnaires. They were split into four groups: one receiving fortified low-fat milk, another with unfortified milk, a third group consuming fortified yogurt, and a fourth with unfortified yogurt. Over a ten-week period, we tracked changes in insomnia symptoms and quality of life.

Our findings revealed that those drinking the vitamin D fortified milk experienced significant improvements in insomnia scores compared to those consuming regular milk. Additionally, quality of life assessments showed positive changes for both fortified and unfortified milk groups. However, the yogurt groups did not demonstrate significant benefits, indicating that while fortified dairy has potential, yogurt may not be as effective in this context.

In conclusion, incorporating fortified low-fat milk into our diets could help ease insomnia symptoms and enhance life satisfaction, although yogurt did not show the same promise.
Read More
We studied how high-dose vitamin D3 supplementation might affect insomnia in adolescent girls. Over nine weeks, 940 participants received a weekly dose of 50,000 IU of vitamin D3 while we tracked changes in their sleep patterns.

Interestingly, we observed a notable reduction in insomnia rates after the treatment. The number of girls reporting insomnia dropped from 15.0% to 11.3%, indicating that this vitamin can potentially improve sleep quality.

We also noticed a slight decrease in daytime sleepiness, with cases falling from 15.6% to 14.7%. Furthermore, those experiencing both insomnia and sleepiness saw a decline from 8.0% to 6.1%.

These findings suggest that high-dose vitamin D can play a significant role in alleviating sleep issues among adolescent girls. However, further studies are needed to see if these effects are consistent across diverse age and gender groups.
Read More
We investigated the connection between vitamin D levels and insomnia among patients with Parkinson's disease (PD). In our study, which involved 182 PD patients compared to 185 healthy controls, we found that those with lower levels of serum vitamin D were more likely to experience insomnia.

Specifically, the results showed that patients with PD had significantly lower vitamin D levels than their healthy counterparts. Furthermore, those lower levels were associated with a higher frequency of falls and higher scores on the Pittsburgh Sleep Quality Index, which measures sleep disturbances.

Although we didn't identify a direct link between vitamin D and bone mineral density, the correlation with insomnia and overall sleep quality was notable. This suggests that vitamin D supplementation could serve as a beneficial strategy for improving non-motor symptoms, including sleep issues, in PD patients.
Read More

User Reviews

USERS' SCORE
Medium or Average
Based on 29 Reviews
6.2
  • All Reviews
  • Positive Reviews
  • Negative Reviews
0
Persistent insomnia
160 people found this helpful
After two weeks of taking it, I developed insomnia that lasted over a month. Although I experienced increased energy, I couldn't sleep a full night.
Read More
9
Improved sleep quality
87 people found this helpful
I had a significant lack of vitamin D, leading to lethargy, apathy, and insomnia. When I discovered my low levels, I started taking these small capsules. There were no side effects, and my condition began to improve. I now take one capsule daily with my family and can sleep better.
Read More
9
Sleep improvement
73 people found this helpful
The capsules did not cause me insomnia; on the contrary, they improved my sleep and overall well-being significantly—much better than drops. Highly recommend for those deficient.
Read More
9
Insomnia elimination
14 people found this helpful
This supplement is fantastic! I take one capsule daily, and it completely eliminated my long-term insomnia and colds. I feel more energetic and my immunity has improved. It also normalises hormonal levels, enhancing libido and bladder recovery.
Read More
9
Mood enhancement
6 people found this helpful
After discovering my extremely low vitamin D levels, I started supplementation. Two months later, my levels increased and my insomnia, mood swings, and appetite regulated. I have more energy and have lost weight. It’s surprising how effective vitamins can be!
Read More

Frequently Asked Questions

9
Insomnia relief
1 people found this helpful
After starting vitamin D at 5000 IU, my insomnia disappeared. I've noticed improved sleep quality without needing sleeping pills or anti-anxiety medication.
9
Mood enhancement
6 people found this helpful
After discovering my extremely low vitamin D levels, I started supplementation. Two months later, my levels increased and my insomnia, mood swings, and appetite regulated. I have more energy and have lost weight. It’s surprising how effective vitamins can be!
0
Stopped insomnia
1 people found this helpful
After three weeks of this dietary supplement, I had to stop due to insomnia, which resumed normal quickly once I ceased taking it.
0
Persistent insomnia
160 people found this helpful
After two weeks of taking it, I developed insomnia that lasted over a month. Although I experienced increased energy, I couldn't sleep a full night.
9
Avoids insomnia
I have a vitamin D deficiency and take it in the morning after breakfast. It's very beneficial; just avoid taking it at night to prevent insomnia.
6
Reduced withdrawal symptoms
10 people found this helpful
After experiencing prolonged withdrawal from sleeping pills, I began taking magnesium with vitamin D. Gradually, my insomnia and discomfort lessened. I now can wake up and engage with life again. These small tablets have made a significant difference.
9
Better performance
1 people found this helpful
I bought vitamin D3 for my mother-in-law. After combining it with omega-3, her energy levels rose, and she no longer suffers from insomnia. It also supports her immune system.
0
Severe insomnia
I bought the vitamins based on positive reviews, but they gave me terrible insomnia, tachycardia, and digestive issues. It was dreadful.
0
Increased insomnia
A good vitamin but caused me insomnia and tachycardia. My parents didn't experience side effects, and their vitamin D levels improved.
8
Vitamin D benefits for insomnia
We set out to explore the relationship between vitamin D and insomnia by examining how low-fat milk and yogurt fortified with 1,500 IU of nano-encapsulated vitamin D could improve sleep issues and overall quality of life.

In our analysis, we included adults with abdominal obesity and a history of insomnia, identifying twenty-nine participants through insomnia severity questionnaires. They were split into four groups: one receiving fortified low-fat milk, another with unfortified milk, a third group consuming fortified yogurt, and a fourth with unfortified yogurt. Over a ten-week period, we tracked changes in insomnia symptoms and quality of life.

Our findings revealed that those drinking the vitamin D fortified milk experienced significant improvements in insomnia scores compared to those consuming regular milk. Additionally, quality of life assessments showed positive changes for both fortified and unfortified milk groups. However, the yogurt groups did not demonstrate significant benefits, indicating that while fortified dairy has potential, yogurt may not be as effective in this context.

In conclusion, incorporating fortified low-fat milk into our diets could help ease insomnia symptoms and enhance life satisfaction, although yogurt did not show the same promise.
We studied how high-dose vitamin D3 supplementation might affect insomnia in adolescent girls. Over nine weeks, 940 participants received a weekly dose of 50,000 IU of vitamin D3 while we tracked changes in their sleep patterns.

Interestingly, we observed a notable reduction in insomnia rates after the treatment. The number of girls reporting insomnia dropped from 15.0% to 11.3%, indicating that this vitamin can potentially improve sleep quality.

We also noticed a slight decrease in daytime sleepiness, with cases falling from 15.6% to 14.7%. Furthermore, those experiencing both insomnia and sleepiness saw a decline from 8.0% to 6.1%.

These findings suggest that high-dose vitamin D can play a significant role in alleviating sleep issues among adolescent girls. However, further studies are needed to see if these effects are consistent across diverse age and gender groups.
We investigated the connection between vitamin D levels and insomnia among patients with Parkinson's disease (PD). In our study, which involved 182 PD patients compared to 185 healthy controls, we found that those with lower levels of serum vitamin D were more likely to experience insomnia.

Specifically, the results showed that patients with PD had significantly lower vitamin D levels than their healthy counterparts. Furthermore, those lower levels were associated with a higher frequency of falls and higher scores on the Pittsburgh Sleep Quality Index, which measures sleep disturbances.

Although we didn't identify a direct link between vitamin D and bone mineral density, the correlation with insomnia and overall sleep quality was notable. This suggests that vitamin D supplementation could serve as a beneficial strategy for improving non-motor symptoms, including sleep issues, in PD patients.
9
Vitamin D3 effects on insomnia unclear
We conducted a controlled study to understand the effects of vitamin D3, along with other components, on insomnia and other symptoms experienced by menopausal women. Over 24 weeks, participants took either a formulation that included vitamin D3 or a standard calcium and vitamin D3 supplement.

Throughout the study, we tracked various symptoms like insomnia and mood changes. We found that while the formulation containing vitamin D3 showed some promise for addressing hormonal symptoms such as hot flashes and mood disturbances, the specific impact of vitamin D3 on insomnia was not isolated enough to draw definitive conclusions.

Importantly, participants who took the formulation reported improvements in overall well-being and satisfaction compared to those on regular calcium and vitamin D3. However, determining the isolated benefits of vitamin D3 alone remains challenging, as it was part of a broader mix of ingredients aimed at alleviating multiple menopause-related symptoms.

Thus, while our findings highlight the potential benefits of a comprehensive approach, the role of vitamin D3 specifically on insomnia is still uncertain. Further studies would be needed to clarify its effectiveness.

References

  1. Radlberger RF, Kunz AB. Vitamin D deficiency promoting non-24 h sleep-wake disorder: a case report. Front Neurol. 2023;14:1141835. 10.3389/fneur.2023.1141835
  2. Sharifan P, Khoshakhlagh M, Khorasanchi Z, Darroudi S, Rezaie M, et al. Efficacy of low-fat milk and yogurt fortified with encapsulated vitamin D on improvement in symptoms of insomnia and quality of life: Evidence from the SUVINA trial. Food Sci Nutr. 2020;8:4484. 10.1002/fsn3.1750
  3. Zhang HJ, Zhang JR, Mao CJ, Li K, Wang F, et al. Relationship between 25-Hydroxyvitamin D, bone density, and Parkinson's disease symptoms. Acta Neurol Scand. 2019;140:274. 10.1111/ane.13141
  4. Bahrami A, Rezaeitalab F, Farahmand SK, Mazloum Khorasani Z, Arabi SM, et al. High-dose Vitamin D Supplementation and Improvement in Cognitive Abilities, Insomnia, and Daytime Sleepiness in Adolescent Girls. Basic Clin Neurosci. 2021;12:339. 10.32598/bcn.2021.1910.1
  5. Mucci M, Carraro C, Mancino P, Monti M, Papadia LS, et al. Soy isoflavones, lactobacilli, Magnolia bark extract, vitamin D3 and calcium. Controlled clinical study in menopause. Minerva Ginecol. 2006;58:323.
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