Overview

SCIENTIFIC SCORE
Questionable
Based on 4 Researches
6.4
USERS' SCORE
Good
Based on 5 Reviews
8.5
Supplement Facts
Serving Size: 1 Softgel
Amount Per Serving
%DV
Vitamin D3 (as Cholecalciferol)
125 mcg
625%

Top Medical Research Studies

We conducted a study to see if high-dose vitamin D3 could improve vascular health and reduce fatigue in individuals suffering from chronic fatigue syndrome (CFS). This was a well-structured trial involving 50 participants, all of whom met specific diagnostic criteria for CFS. Participants were divided into two groups: one received 100,000 units of vitamin D3 every two months, while the other received a placebo over a period of six months.

Despite a noticeable increase of 22 nmol/L in vitamin D levels for those who received the treatment compared to the placebo group, we found no significant benefits. There was no change in arterial stiffness, a key vascular health indicator, nor improvements in overall fatigue as measured by the Piper Fatigue scale.

In essence, our findings indicate that high-dose oral vitamin D3 does not offer the hoped-for relief in vascular function or fatigue for patients with chronic fatigue syndrome. This suggests that other therapeutic options may need to be explored for individuals suffering from this condition.
Read More
9.5
Vitamin D treatment enhances alertness
We explored the impact of vitamin D treatment on a case of excessive daytime sleepiness (EDS), specifically in the context of chronic fatigue syndrome. A 28-year-old woman was found to have low levels of vitamin D after experiencing four months of overwhelming fatigue and sleepiness, despite being tested for sleep disorders.

After starting vitamin D supplementation, her condition improved remarkably within just two weeks. Along with a boost in alertness, her associated symptoms like muscle pain and headaches began to fade. By the end of the treatment, her score on the Epworth Sleepiness Scale, which measures daytime sleepiness, dropped significantly, indicating much better daytime function.

This case suggests that vitamin D may play a role in improving symptoms commonly linked to chronic fatigue syndrome. While more research is needed to fully understand the mechanisms behind this improvement, our findings open the door to potentially screening patients with chronic fatigue for vitamin D deficiency to expedite treatment.
Read More
8
We conducted a double-blind, placebo-controlled trial to evaluate the effects of an oral food supplement (OFS) on long COVID patients, particularly focusing on chronic inflammation and fatigue. The supplement included components like rosehip, propolis, royal jelly, and zinc, with vitamin C being a key ingredient.

Through our two-month study, which involved giving participants either the OFS or a placebo, we made some interesting observations. Notably, patients who took the OFS experienced a significant reduction in inflammatory markers, which are often linked to chronic fatigue syndrome. This included improvements in the neutrophil-to-lymphocyte and monocyte-to-lymphocyte ratios.

We also noted a substantial increase in vitamin D levels among those taking the supplement, which correlated with enhanced quality of life and decreased fatigue as measured by the fatigue severity scale. Our findings suggest that the combination of ingredients in the OFS, particularly its vitamin D content, can help alleviate some symptoms associated with long COVID, especially chronic fatigue.

However, since the supplement included multiple active ingredients, isolating the specific impact of vitamin D on chronic fatigue syndrome is challenging. Still, the overall results indicate positive changes for patients dealing with the lingering effects of COVID.
Read More

Most Useful Reviews

9
Health improved significantly
In our region, vitamin D deficiency is common, which caused my husband and me to experience chronic fatigue, apathy, and drowsiness. Analyses indicated we needed a course of vitamin D. After a month, our health improved significantly, with tests confirming our levels nearing normal. I recommend it and will take it again!
Read More
9
Chronic fatigue disappeared
Vitamin D is essential for those in cold climates; it eliminated my drowsiness and chronic fatigue. The American version of the supplement proved more cost-effective than the Russian counterpart, and my vitamin D levels have increased to adequate levels.
Read More
9
Mood and strength improved
I took 10,000 IU of vitamin D for a month before switching to a constant dosage of 5,000 IU as prescribed by my doctor. My vitamin D levels increased significantly, and as a result, my mood has improved, I have more strength, and chronic fatigue has passed.
Read More

Medical Researches

SCIENTIFIC SCORE
Questionable
Based on 4 Researches
6.4
  • All Researches
9.5
Vitamin D treatment enhances alertness
We explored the impact of vitamin D treatment on a case of excessive daytime sleepiness (EDS), specifically in the context of chronic fatigue syndrome. A 28-year-old woman was found to have low levels of vitamin D after experiencing four months of overwhelming fatigue and sleepiness, despite being tested for sleep disorders.

After starting vitamin D supplementation, her condition improved remarkably within just two weeks. Along with a boost in alertness, her associated symptoms like muscle pain and headaches began to fade. By the end of the treatment, her score on the Epworth Sleepiness Scale, which measures daytime sleepiness, dropped significantly, indicating much better daytime function.

This case suggests that vitamin D may play a role in improving symptoms commonly linked to chronic fatigue syndrome. While more research is needed to fully understand the mechanisms behind this improvement, our findings open the door to potentially screening patients with chronic fatigue for vitamin D deficiency to expedite treatment.
Read More
8
We conducted a double-blind, placebo-controlled trial to evaluate the effects of an oral food supplement (OFS) on long COVID patients, particularly focusing on chronic inflammation and fatigue. The supplement included components like rosehip, propolis, royal jelly, and zinc, with vitamin C being a key ingredient.

Through our two-month study, which involved giving participants either the OFS or a placebo, we made some interesting observations. Notably, patients who took the OFS experienced a significant reduction in inflammatory markers, which are often linked to chronic fatigue syndrome. This included improvements in the neutrophil-to-lymphocyte and monocyte-to-lymphocyte ratios.

We also noted a substantial increase in vitamin D levels among those taking the supplement, which correlated with enhanced quality of life and decreased fatigue as measured by the fatigue severity scale. Our findings suggest that the combination of ingredients in the OFS, particularly its vitamin D content, can help alleviate some symptoms associated with long COVID, especially chronic fatigue.

However, since the supplement included multiple active ingredients, isolating the specific impact of vitamin D on chronic fatigue syndrome is challenging. Still, the overall results indicate positive changes for patients dealing with the lingering effects of COVID.
Read More
8
Beta-glucan shows cognitive improvements
We conducted a randomized, double-blind, placebo-controlled trial to explore how yeast beta-glucan, along with multivitamins, affects individuals suffering from Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). In our study, 65 participants received either beta-glucan combined with vitamins and zinc or a placebo for 36 weeks.

Interestingly, while our primary focus was on beta-glucan, which was shown to significantly improve cognitive fatigue, the role of vitamin D3 within this combination was not clearly established. This makes it challenging to directly assess the impact of vitamin D3 alone on chronic fatigue syndrome outcomes.

Overall, we discovered that beta-glucan supplementation could positively influence cognitive fatigue, offering promise for future research on nutritional support in ME/CFS patients. However, definitive conclusions about vitamin D3's effectiveness remain inconclusive due to the combined nature of the treatment.
Read More
We conducted a study to see if high-dose vitamin D3 could improve vascular health and reduce fatigue in individuals suffering from chronic fatigue syndrome (CFS). This was a well-structured trial involving 50 participants, all of whom met specific diagnostic criteria for CFS. Participants were divided into two groups: one received 100,000 units of vitamin D3 every two months, while the other received a placebo over a period of six months.

Despite a noticeable increase of 22 nmol/L in vitamin D levels for those who received the treatment compared to the placebo group, we found no significant benefits. There was no change in arterial stiffness, a key vascular health indicator, nor improvements in overall fatigue as measured by the Piper Fatigue scale.

In essence, our findings indicate that high-dose oral vitamin D3 does not offer the hoped-for relief in vascular function or fatigue for patients with chronic fatigue syndrome. This suggests that other therapeutic options may need to be explored for individuals suffering from this condition.
Read More

User Reviews

USERS' SCORE
Good
Based on 5 Reviews
8.5
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Health improved significantly
In our region, vitamin D deficiency is common, which caused my husband and me to experience chronic fatigue, apathy, and drowsiness. Analyses indicated we needed a course of vitamin D. After a month, our health improved significantly, with tests confirming our levels nearing normal. I recommend it and will take it again!
Read More
9
Chronic fatigue disappeared
Vitamin D is essential for those in cold climates; it eliminated my drowsiness and chronic fatigue. The American version of the supplement proved more cost-effective than the Russian counterpart, and my vitamin D levels have increased to adequate levels.
Read More
9
Mood and strength improved
I took 10,000 IU of vitamin D for a month before switching to a constant dosage of 5,000 IU as prescribed by my doctor. My vitamin D levels increased significantly, and as a result, my mood has improved, I have more strength, and chronic fatigue has passed.
Read More
7.5
Drowsiness eliminated
1 people found this helpful
Among all dietary supplements, I felt the effects of taking Vitamin D3 quite quickly; drowsiness and chronic fatigue disappeared. It is recommended to take it in the first half of the day due to its invigorating effect.
Read More
7.5
Stable health achieved
Vitamin D3 is popular in my family and effectively addresses vitamin D deficiency. My brother was prescribed this form by a doctor due to signs of chronic fatigue and drowsiness. After taking it for a month, his health improved significantly, and he found that he doesn’t tire as easily anymore.
Read More

Frequently Asked Questions

9
Health improved significantly
In our region, vitamin D deficiency is common, which caused my husband and me to experience chronic fatigue, apathy, and drowsiness. Analyses indicated we needed a course of vitamin D. After a month, our health improved significantly, with tests confirming our levels nearing normal. I recommend it and will take it again!
7.5
Drowsiness eliminated
1 people found this helpful
Among all dietary supplements, I felt the effects of taking Vitamin D3 quite quickly; drowsiness and chronic fatigue disappeared. It is recommended to take it in the first half of the day due to its invigorating effect.
9
Mood and strength improved
I took 10,000 IU of vitamin D for a month before switching to a constant dosage of 5,000 IU as prescribed by my doctor. My vitamin D levels increased significantly, and as a result, my mood has improved, I have more strength, and chronic fatigue has passed.
7.5
Stable health achieved
Vitamin D3 is popular in my family and effectively addresses vitamin D deficiency. My brother was prescribed this form by a doctor due to signs of chronic fatigue and drowsiness. After taking it for a month, his health improved significantly, and he found that he doesn’t tire as easily anymore.
9
Chronic fatigue disappeared
Vitamin D is essential for those in cold climates; it eliminated my drowsiness and chronic fatigue. The American version of the supplement proved more cost-effective than the Russian counterpart, and my vitamin D levels have increased to adequate levels.
We conducted a study to see if high-dose vitamin D3 could improve vascular health and reduce fatigue in individuals suffering from chronic fatigue syndrome (CFS). This was a well-structured trial involving 50 participants, all of whom met specific diagnostic criteria for CFS. Participants were divided into two groups: one received 100,000 units of vitamin D3 every two months, while the other received a placebo over a period of six months.

Despite a noticeable increase of 22 nmol/L in vitamin D levels for those who received the treatment compared to the placebo group, we found no significant benefits. There was no change in arterial stiffness, a key vascular health indicator, nor improvements in overall fatigue as measured by the Piper Fatigue scale.

In essence, our findings indicate that high-dose oral vitamin D3 does not offer the hoped-for relief in vascular function or fatigue for patients with chronic fatigue syndrome. This suggests that other therapeutic options may need to be explored for individuals suffering from this condition.
8
We conducted a double-blind, placebo-controlled trial to evaluate the effects of an oral food supplement (OFS) on long COVID patients, particularly focusing on chronic inflammation and fatigue. The supplement included components like rosehip, propolis, royal jelly, and zinc, with vitamin C being a key ingredient.

Through our two-month study, which involved giving participants either the OFS or a placebo, we made some interesting observations. Notably, patients who took the OFS experienced a significant reduction in inflammatory markers, which are often linked to chronic fatigue syndrome. This included improvements in the neutrophil-to-lymphocyte and monocyte-to-lymphocyte ratios.

We also noted a substantial increase in vitamin D levels among those taking the supplement, which correlated with enhanced quality of life and decreased fatigue as measured by the fatigue severity scale. Our findings suggest that the combination of ingredients in the OFS, particularly its vitamin D content, can help alleviate some symptoms associated with long COVID, especially chronic fatigue.

However, since the supplement included multiple active ingredients, isolating the specific impact of vitamin D on chronic fatigue syndrome is challenging. Still, the overall results indicate positive changes for patients dealing with the lingering effects of COVID.
9.5
Vitamin D treatment enhances alertness
We explored the impact of vitamin D treatment on a case of excessive daytime sleepiness (EDS), specifically in the context of chronic fatigue syndrome. A 28-year-old woman was found to have low levels of vitamin D after experiencing four months of overwhelming fatigue and sleepiness, despite being tested for sleep disorders.

After starting vitamin D supplementation, her condition improved remarkably within just two weeks. Along with a boost in alertness, her associated symptoms like muscle pain and headaches began to fade. By the end of the treatment, her score on the Epworth Sleepiness Scale, which measures daytime sleepiness, dropped significantly, indicating much better daytime function.

This case suggests that vitamin D may play a role in improving symptoms commonly linked to chronic fatigue syndrome. While more research is needed to fully understand the mechanisms behind this improvement, our findings open the door to potentially screening patients with chronic fatigue for vitamin D deficiency to expedite treatment.

References

  1. Noce A, Marrone G, Di Lauro M, Vita C, Montalto G, et al. Potential Anti-Inflammatory and Anti-Fatigue Effects of an Oral Food Supplement in Long COVID Patients. Pharmaceuticals (Basel). 2024;17. doi:10.3390/ph17040463
  2. Witham MD, Adams F, McSwiggan S, Kennedy G, Kabir G, et al. Effect of intermittent vitamin D3 on vascular function and symptoms in chronic fatigue syndrome--a randomised controlled trial. Nutr Metab Cardiovasc Dis. 2015;25:287. doi:10.1016/j.numecd.2014.10.007
  3. McCarty DE. Resolution of hypersomnia following identification and treatment of vitamin d deficiency. J Clin Sleep Med. 2010;6:605.
  4. Lacasa M, Alegre-Martin J, Sentañes RS, Varela-Sende L, Jurek J, et al. Yeast Beta-Glucan Supplementation with Multivitamins Attenuates Cognitive Impairments in Individuals with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial. Nutrients. 2023;15. doi:10.3390/nu15214504
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