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Solgar Vitamin B12
SCIENTIFIC SCORE
Questionable
Based on 9 Researches
6.8
USERS' SCORE
Good
Based on 2 Reviews
8.6
Supplement Facts
Serving Size:   1 Vegetable Capsule
Amount Per Serving
%DV
Vitamin B12 (as cyanocobalamin)
500 mcg
20,833%

Top Medical Research Studies

0
Vitamin B12 ineffective for CFS
N of 1 trials. Managing patients with chronic fatigue syndrome: two case reports.
Direct evaluation of treatment effects
We explored the effectiveness of high-dose vitamin B12 injections on chronic fatigue syndrome (CFS) through two case reports that utilized N of 1 trials. This approach allowed us to make tailored treatment decisions based on individual responses to the therapy.

In one case, we found that high-dose vitamin B12 injections did not yield positive results, leaving the patient without significant relief from their symptoms. Conversely, in another case, we observed that nimodipine proved to be a very effective treatment for that patient’s chronic fatigue.

These findings suggest that while vitamin B12 may not be helpful for everyone suffering from CFS, other treatments like nimodipine can be beneficial. Thus, personalized treatment strategies are key in managing this complex and varied condition.
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8
Vitamin B12 benefits in CFS patients
Open Trial of Vitamin B12 Nasal Drops in Adults With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Comparison of Responders and Non-Responders.
Highly relevant for treatment options
We investigated the use of vitamin B12 nasal drops in adults with chronic fatigue syndrome (CFS) over three months. A total of 51 patients participated, and we measured their vitamin B12 levels alongside physical activity and fatigue scores.

Remarkably, two-thirds of the participants experienced positive results, including increased activity and better overall scores on fatigue measures. While responders showed significant improvements, the non-responders had only minor increases in vitamin B12 levels.

This indicates that vitamin B12 nasal drops could be a beneficial alternative to injections for many CFS patients.
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8
B12 shows variable efficacy for ME
Response to vitamin B12 and folic acid in myalgic encephalomyelitis and fibromyalgia.
Study indicates complex treatment outcomes
We evaluated the impact of B12 injections combined with folic acid on patients with chronic fatigue syndrome, also known as myalgic encephalomyelitis (ME). In our survey of 38 patients, we identified two groups based on their response: Good and Mild responders. Good responders received more frequent and higher doses of B12, leading to significant improvements in their symptoms.

However, Mild responders, many of whom took pain medications, reported minimal progress. Overall, while some patients showed benefits, the effectiveness of B12 treatment varies widely, and further research is needed to understand optimal dosages and drug interactions.
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Most Useful Reviews

9.5
Increased energy levels
I began taking vitamin B12 and quickly noticed a positive effect. This vitamin is crucial for maintaining normal energy levels and a healthy nervous system. Almost immediately, I felt less fatigued and my mental clarity improved. B12 is vital for those with chronic fatigue syndrome, particularly as it aids in appetite regulation when deficiency is an issue. The capsules are easy to swallow and I’ve experienced no side effects. If you're suffering from fatigue or concentration issues, I highly recommend this supplement!
Read More
8
Anemia prevention
B12 supports red blood cell division, essential for maintaining oxygen circulation in the body. This is vital as deficiencies can lead to chronic fatigue syndrome, resulting in symptoms like fatigue and memory impairment. The quality of ingredients is excellent.
Read More

Medical Researches

SCIENTIFIC SCORE
Questionable
Based on 9 Researches
6.8
  • All Researches
8
Vitamin B12 benefits in CFS patients
Open Trial of Vitamin B12 Nasal Drops in Adults With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Comparison of Responders and Non-Responders.
Highly relevant for treatment options
We investigated the use of vitamin B12 nasal drops in adults with chronic fatigue syndrome (CFS) over three months. A total of 51 patients participated, and we measured their vitamin B12 levels alongside physical activity and fatigue scores.

Remarkably, two-thirds of the participants experienced positive results, including increased activity and better overall scores on fatigue measures. While responders showed significant improvements, the non-responders had only minor increases in vitamin B12 levels.

This indicates that vitamin B12 nasal drops could be a beneficial alternative to injections for many CFS patients.
Read More
8
B12 shows variable efficacy for ME
Response to vitamin B12 and folic acid in myalgic encephalomyelitis and fibromyalgia.
Study indicates complex treatment outcomes
We evaluated the impact of B12 injections combined with folic acid on patients with chronic fatigue syndrome, also known as myalgic encephalomyelitis (ME). In our survey of 38 patients, we identified two groups based on their response: Good and Mild responders. Good responders received more frequent and higher doses of B12, leading to significant improvements in their symptoms.

However, Mild responders, many of whom took pain medications, reported minimal progress. Overall, while some patients showed benefits, the effectiveness of B12 treatment varies widely, and further research is needed to understand optimal dosages and drug interactions.
Read More
8
Vitamin B12 drops show promise
Open Trial of Vitamin B12 Nasal Drops in Adults With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Comparison of Responders and Non-Responders.
Direct investigation of B12 treatment
We examined the impact of vitamin B12 nasal drops on individuals suffering from myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Our study involved fifty-one patients, predominantly female, with an average age of 42 and an average illness duration of 16 years.

After three months of treatment, we measured their vitamin B12 serum levels, physical activity, and fatigue and concentration levels. Interestingly, we found that the participants who responded positively to the treatment experienced significant improvements in their vitamin B12 levels, daily step count, and overall physical activity. Moreover, those who reported a positive response noted a decrease in fatigue levels.

On the flip side, those categorized as non-responders had only a modest increase in vitamin B12 levels, with no notable improvement in other measures. Overall, our findings suggest that nasal drops could serve as a viable alternative to vitamin B12 injections, especially since around two-thirds of participants reported feeling better after treatment. This pilot study opens up new avenues for interventions in managing ME/CFS and highlights the importance of considering alternative treatment methods.
Read More
8
B12 may aid chronic fatigue treatment
Response to vitamin B12 and folic acid in myalgic encephalomyelitis and fibromyalgia.
Relevant score suggests moderate support
We explored the effects of frequent vitamin B12 injections in patients suffering from chronic fatigue syndrome (CFS), also known as myalgic encephalomyelitis (ME). The study included 38 patients who received B12 injections at least weekly for a period ranging from six months to several years.

Our findings revealed two groups of patients: those termed "Good responders" and "Mild responders." Good responders, who reported feeling significantly better, used higher doses and more frequent injections of B12, alongside daily oral folic acid tailored to their individual needs.

Interestingly, the results indicated that Mild responders often relied on pain medications like opioids, which might interfere with B12’s effects. We noted that co-existing thyroid issues were common among these patients, suggesting a complex interaction at play.

Overall, our study points to a real potential benefit from vitamin B12 and folic acid in managing chronic fatigue symptoms. However, individual responses can vary greatly, and it’s crucial to consider each patient's unique circumstances when designing future clinical studies.
Read More
8
Potential effects on chronic fatigue
Treatment of multiple sclerosis with lofepramine, L-phenylalanine and vitamin B(12): mechanism of action and clinical importance: roles of the locus coeruleus and central noradrenergic systems.
Combination therapy complicates evaluation
We recently came across an intriguing study that highlighted the potential benefits of a combination therapy involving lofepramine, L-phenylalanine, and vitamin B12 for patients suffering from multiple sclerosis (MS). Conducted as a randomized, placebo-controlled double-blind trial, the research aimed to evaluate how this combination could help alleviate various symptoms associated with MS and chronic pain.

While this study did address the role of vitamin B12, it was examined alongside lofepramine and phenylalanine. This makes it challenging for us to pinpoint the specific impact of vitamin B12 in the context of chronic fatigue syndrome on its own. The treatment showed effectiveness in improving symptoms within just two to four weeks, but due to the combination of treatments, we need more focused studies to assess vitamin B12's distinct role.

Overall, it's exciting to see a potential link between this therapy and symptom relief, yet we must remain cautious about attributing the benefits solely to vitamin B12, given the blended approach of the therapy used in the trial.
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User Reviews

USERS' SCORE
Good
Based on 2 Reviews
8.6
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Increased energy levels
I began taking vitamin B12 and quickly noticed a positive effect. This vitamin is crucial for maintaining normal energy levels and a healthy nervous system. Almost immediately, I felt less fatigued and my mental clarity improved. B12 is vital for those with chronic fatigue syndrome, particularly as it aids in appetite regulation when deficiency is an issue. The capsules are easy to swallow and I’ve experienced no side effects. If you're suffering from fatigue or concentration issues, I highly recommend this supplement!
Read More
8
Anemia prevention
B12 supports red blood cell division, essential for maintaining oxygen circulation in the body. This is vital as deficiencies can lead to chronic fatigue syndrome, resulting in symptoms like fatigue and memory impairment. The quality of ingredients is excellent.
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