Overview

SCIENTIFIC SCORE
Questionable
Based on 3 Researches
5.8
USERS' SCORE
Moderately Good
Based on 6 Reviews
7.8
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
Vitamin D2 (as Ergocalciferol)
25 mcg (1,000 IU)
125%

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

9.5
Enhanced energy
An inexpensive vitamin D that helps maintain blood levels, suitable for children. I noticed having more energy and less fatigue, and waking up was easier. It significantly bolstered my immunity against chronic fatigue syndrome.
Read More
8.8
Nervous system support
Excellent for maintaining nervous, muscular, and skeletal systems. I found it beneficial for normal sleep, relaxation, and alleviating fatigue related to chronic fatigue syndrome.
Read More
8.3
Supports absorption
A remarkable product. The dosage is crucial as it boosts immunity and helps absorption. Being exposed to sunshine is critical. I found it essential for combating chronic fatigue syndrome, and I plan to repurchase.
Read More

Medical Researches

SCIENTIFIC SCORE
Questionable
Based on 3 Researches
5.8
  • 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
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
Moderately Good
Based on 6 Reviews
7.8
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Enhanced energy
An inexpensive vitamin D that helps maintain blood levels, suitable for children. I noticed having more energy and less fatigue, and waking up was easier. It significantly bolstered my immunity against chronic fatigue syndrome.
Read More
8.8
Nervous system support
Excellent for maintaining nervous, muscular, and skeletal systems. I found it beneficial for normal sleep, relaxation, and alleviating fatigue related to chronic fatigue syndrome.
Read More
8.3
Supports absorption
A remarkable product. The dosage is crucial as it boosts immunity and helps absorption. Being exposed to sunshine is critical. I found it essential for combating chronic fatigue syndrome, and I plan to repurchase.
Read More
8
Improved immunity
A good vitamin; dosage should be tailored after laboratory analysis. It enhances the body’s immune system, as most people suffer from a significant deficiency. I experienced weakness, fatigue, joint pain, brittle nails, and hair, as well as poor calcium absorption when deficient.
Read More
0
Memory issues
Dangerous product! Vegan vitamin D2 caused extreme fatigue and severe memory issues for me. I discarded it and switched back to vitamin D3. I strongly advise against using this product if you have chronic fatigue syndrome.
Read More

Frequently Asked Questions

Chronic Fatigue Syndrome (CFS), also known as Myalgic Encephalomyelitis (ME), is a complex and debilitating condition characterized by profound fatigue that doesn’t improve with rest and worsens with physical or mental activity. This crippling fatigue is often accompanied by a variety of symptoms, including sleep disturbances, cognitive difficulties, muscle pain, and joint pain. Unlike typical tiredness, the fatigue experienced in CFS is long-lasting, and it can significantly hinder everyday activities and overall quality of life.

The precise cause of CFS remains unknown, but it is believed to be influenced by a combination of genetic, environmental, immunological, and psychological factors. Diagnosis primarily relies on a careful assessment of symptoms, as there are no definitive laboratory tests available. Treatment options focus on symptom management and may include lifestyle changes, physical therapy, medication for pain management, and cognitive behavioral therapy. Given the complexity and variability of the condition, individuals with CFS should consult healthcare professionals who specialize in this area to develop personalized management strategies.

Vitamin D is a fat-soluble vitamin that's essential for maintaining healthy bones and teeth, supporting immune system function, and facilitating normal cell growth and development. It plays a crucial role in calcium absorption in the gut, which is vital for bone health. Unlike most vitamins, our bodies can produce Vitamin D when exposed to sunlight, specifically UVB rays, which is why it’s often referred to as the "sunshine vitamin." However, depending on your geographical location, lifestyle, and skin type, getting sufficient Vitamin D from the sun alone can be challenging, particularly during the winter months.

In addition to sunlight, Vitamin D can be obtained from certain foods such as fatty fish (like salmon and mackerel), fish liver oils, and fortified foods like milk and cereals. Some individuals may also consider supplements, especially if they're at risk for deficiency. Insufficient vitamin D levels are linked to various health issues, including rickets in children, osteomalacia in adults, and even an increased risk of chronic diseases. Regularly checking your vitamin D levels and consulting with a healthcare professional can help ensure you're meeting your needs for optimal health.

Chronic Fatigue Syndrome (CFS) is a complex disorder characterized by extreme fatigue that doesn't improve with rest and may be exacerbated by physical or mental activity. While the causes of CFS remain unclear, there is ongoing research into various interventions that may alleviate its symptoms, including vitamin D supplementation. Some studies suggest that low levels of vitamin D could be linked to fatigue and may play a role in immune function, potentially impacting CFS. However, definitive clinical evidence confirming that vitamin D can help specifically with CFS is still lacking.

If you suspect that low vitamin D levels could be contributing to your fatigue, it might be worthwhile to discuss this with your healthcare provider. They can recommend blood tests to assess your vitamin D status and evaluate the potential benefits of supplementation if necessary. It's important to approach any treatment plan for Chronic Fatigue Syndrome comprehensively, as this multifaceted condition often requires a combination of therapies tailored to individual needs.

Based on user reviews, the timeframe for experiencing results from vitamin D supplements when dealing with Chronic Fatigue Syndrome can vary. Many users have reported noticeable improvements in energy levels and a reduction in fatigue after starting the supplement, with some noting benefits shortly after use. For example, one reviewer mentioned feeling more energetic and less fatigued soon after beginning their regimen (Read Review). Another user highlighted that the supplement was beneficial for alleviating fatigue related to their condition, suggesting a positive effect as well (Read Review).

However, several factors can affect the onset of results, including dosage, individual health conditions, sunlight exposure, and existing vitamin D levels in the body. One user emphasized the importance of appropriate dosage and sunlight exposure for the supplement's effectiveness (Read Review). While many report improvements within a few weeks, individual experiences vary; therefore, it is recommended to monitor personal response over time for the most accurate assessment of its effectiveness.

When it comes to the effectiveness of supplements for Chronic Fatigue Syndrome (CFS), scientific research presents mixed results. One study focused on high-dose vitamin D3 and its implications for CFS sufferers found that despite increased vitamin D levels in participants, there were no significant improvements in fatigue or vascular health indicators over six months [2]. This suggests that vitamin D alone may not provide the relief many are seeking for CFS.

On the other hand, another study indicated potential benefits of vitamin D in alleviating symptoms associated with chronic fatigue. A patient undergoing treatment for excessive daytime sleepiness due to CFS experienced remarkable improvement after beginning vitamin D supplementation, leading to enhanced alertness and a reduction in related symptoms, such as muscle pain [3]. Additionally, a separate trial involving an oral food supplement, which included vitamin D, showed promising results for long COVID patients by reducing inflammatory markers and correlating with improved quality of life [1]. While these findings suggest some potential benefits, they also highlight the need for further research to fully understand the best ways to address chronic fatigue symptoms through supplementation.

Users report various improvements in symptoms related to chronic fatigue syndrome after taking vitamin D supplements. Many individuals have noted an increase in energy levels and a reduction in overall fatigue. For instance, one user mentioned feeling more energetic, experiencing less fatigue, and finding it easier to wake up (Read Review). Another user highlighted how the supplement aided in normal sleep and relaxation, contributing to a significant alleviation of fatigue (Read Review).

However, not all experiences are positive. One reviewer noted that a specific form of vitamin D caused extreme fatigue and memory issues, which underscores the importance of choosing the right type of supplement (Read Review). Other users emphasized that proper dosage and sunlight exposure are crucial for achieving the desired benefits, suggesting that individual results can vary widely (Read Review). While many found relief in their symptoms, readers should monitor their responses closely and consult with a healthcare professional for tailored advice.

Users report mixed experiences when combining this vitamin D supplement with other supplements for managing Chronic Fatigue Syndrome (CFS). Some users found that enhancing their regimen with vitamin D improved their energy levels and reduced fatigue symptoms significantly. For instance, a reviewer noted increased energy and easier wake-up times after incorporating the supplement into their routine (Read Review). Others mentioned how it contributed to better sleep patterns and relaxation, key factors in alleviating their fatigue related to CFS (Read Review).

However, some individuals experienced adverse effects when pairing certain forms of vitamin D with compatible treatments. For example, one user reported that switching to a vegan form caused extreme fatigue and memory issues, underscoring the necessity of choosing the right type of supplement (Read Review). Additionally, factors like taking other supplements, personal deficiencies, dosage adjustments, and sun exposure were highlighted as critical components impacting the overall effectiveness of the combination for managing CFS (Read Review). Therefore, while users have found vitamin D beneficial in their CFS management, careful consideration of individual needs and formulations is essential.

Users report varying experiences regarding the right dosage of Vitamin D for treating Chronic Fatigue Syndrome (CFS). Many reviews highlight that the dosage should be personalized, ideally after laboratory analysis, to address individual deficiencies accurately. One user noted they experienced significant improvement in their energy levels and reduction in fatigue when they maintained appropriate blood levels of Vitamin D, specifically recognizing its role in bolstering immunity against CFS symptoms (Read Review). Another user emphasized the importance of dosage in enhancing absorption and combating CFS, while also acknowledging that sunlight exposure is crucial for optimal Vitamin D levels (Read Review).

However, there are warnings about certain forms of Vitamin D; for example, one individual reported severe fatigue from taking Vitamin D2, recommending a switch back to Vitamin D3 for improved results (Read Review). Additionally, users consistently mention that deficiencies can lead to symptoms like muscle weakness and fatigue, suggesting that effective supplementation can help counteract these issues (Read Review). Ultimately, the consensus is that a careful approach to dosing, potentially guided by medical advice, is essential for those dealing with Chronic Fatigue Syndrome.

9.5
Enhanced energy
An inexpensive vitamin D that helps maintain blood levels, suitable for children. I noticed having more energy and less fatigue, and waking up was easier. It significantly bolstered my immunity against chronic fatigue syndrome.
8.8
Nervous system support
Excellent for maintaining nervous, muscular, and skeletal systems. I found it beneficial for normal sleep, relaxation, and alleviating fatigue related to chronic fatigue syndrome.
8.3
Supports absorption
A remarkable product. The dosage is crucial as it boosts immunity and helps absorption. Being exposed to sunshine is critical. I found it essential for combating chronic fatigue syndrome, and I plan to repurchase.
0
Memory issues
Dangerous product! Vegan vitamin D2 caused extreme fatigue and severe memory issues for me. I discarded it and switched back to vitamin D3. I strongly advise against using this product if you have chronic fatigue syndrome.
7
Muscle pain relief
Quality vitamin D. Muscle weakness, fatigue, and cramps were symptoms I faced when deficient. I learned that vitamin D promotes muscle fibre renewal and is essential to prevent chronic fatigue syndrome symptoms.
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.
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.
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.

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.
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