Last update
4/13/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 21 Researches
8.2
USERS' SCORE
Good
Based on 18 Reviews
8.4
Supplement Facts
Serving Size: 1 Lozenge
Amount Per Serving
%DV
Vitamin B-12 (as Methylcobalamin)
1 mg (1,000 mcg)
41,667%
Top Medical Research Studies
9.5
We explored the case of a 23-month-old boy suffering from severe pancytopenia linked to Imerslund-Gräsbeck syndrome, a rare condition caused by an inability to absorb vitamin B12. Upon diagnosis, the boy received vitamin B12 replacement therapy, which effectively addressed his symptoms and improved his health.
This case highlights the significance of early detection and treatment of IGS to avoid potential neurological damage. It's crucial to recognize this condition, even when neurological symptoms are absent, to provide timely care.
This case highlights the significance of early detection and treatment of IGS to avoid potential neurological damage. It's crucial to recognize this condition, even when neurological symptoms are absent, to provide timely care.
Read More
9.5
We focused on how oral vitamin B12 could help those with pernicious anemia, where absorption is usually impaired. Participants diagnosed with vitamin B12 deficiency due to this condition took a daily dose of 1000 μg of oral cyanocobalamin.
Over a year, an impressive 88.5% of them no longer showed deficiency after just one month, with significant improvements in vitamin B12 levels and related biological markers. Importantly, these benefits lasted throughout the study period.
Over a year, an impressive 88.5% of them no longer showed deficiency after just one month, with significant improvements in vitamin B12 levels and related biological markers. Importantly, these benefits lasted throughout the study period.
Read More
9
We explored a rare condition called Transcobalamin deficiency, which hinders vitamin B12 transport in the body. This case involved a 2-year-old boy suffering from severe anemia and frequent infections.
After genetic tests revealed a specific mutation, we administered high doses of methylcobalamin. Remarkably, the child's health significantly improved, highlighting the importance of diagnosing and treating this deficiency early to avoid serious complications.
After genetic tests revealed a specific mutation, we administered high doses of methylcobalamin. Remarkably, the child's health significantly improved, highlighting the importance of diagnosing and treating this deficiency early to avoid serious complications.
Read More
Most Useful Reviews
9
Improved energy levels
4 people found this helpful
I took vitamin B12 while following a meat-free diet due to my anemia, and it also helped with my iron deficiency anaemia. My levels of both iron and B12 were very low, but they are interrelated. I noticed an increase in both B12 and iron, along with raised ferritin. The key is to avoid taking them together, spacing them out instead.
Read More
9
Long-term maintenance
2 people found this helpful
I've been using this product for over 10 years to manage macrocytic anaemia and maintain normal levels. It has a slightly sweet and sour taste, is easy to take, and is reasonably priced, which appeals to me since I rely on it regularly.
Read More
9
Improved deficiency
2 people found this helpful
Excellent! This form of vitamin B12 is essential, especially since vitamin B12 deficiency can lead to anaemia. I highly recommend monitoring and addressing this deficiency.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 21 Researches
8.2
- All Researches
9.5
We explored the case of a 23-month-old boy suffering from severe pancytopenia linked to Imerslund-Gräsbeck syndrome, a rare condition caused by an inability to absorb vitamin B12. Upon diagnosis, the boy received vitamin B12 replacement therapy, which effectively addressed his symptoms and improved his health.
This case highlights the significance of early detection and treatment of IGS to avoid potential neurological damage. It's crucial to recognize this condition, even when neurological symptoms are absent, to provide timely care.
This case highlights the significance of early detection and treatment of IGS to avoid potential neurological damage. It's crucial to recognize this condition, even when neurological symptoms are absent, to provide timely care.
Read More
9.5
We focused on how oral vitamin B12 could help those with pernicious anemia, where absorption is usually impaired. Participants diagnosed with vitamin B12 deficiency due to this condition took a daily dose of 1000 μg of oral cyanocobalamin.
Over a year, an impressive 88.5% of them no longer showed deficiency after just one month, with significant improvements in vitamin B12 levels and related biological markers. Importantly, these benefits lasted throughout the study period.
Over a year, an impressive 88.5% of them no longer showed deficiency after just one month, with significant improvements in vitamin B12 levels and related biological markers. Importantly, these benefits lasted throughout the study period.
Read More
9.5
We investigated how vitamin B12 treatment plays a role in addressing anemia in a young adolescent with complex health issues, including severe anemia, joint problems, and neurological symptoms. This individual presented with a deficiency in vitamin B12, alongside other autoimmune conditions, leading to a diagnosis of subacute combined degeneration of the spinal cord.
The patient's treatment regimen included high-dose intravenous methylprednisolone, immunoglobulin therapy, oral naproxen, and vitamin B12 supplementation, among others. We observed that the introduction of vitamin B12 into her treatment plan contributed to combating her anemia effectively. The combination of therapies, especially with vitamin B12, significantly improved her overall health and restored her quality of life.
Our findings highlight the importance of early diagnosis and prompt treatment in patients with complex autoimmune issues. Specifically, vitamin B12 emerges as a critical component in managing anemia related to such conditions. While the study is anecdotal, it reinforces the idea that vitamin B12 can be beneficial in improving anemia outcomes in similarly affected patients.
The patient's treatment regimen included high-dose intravenous methylprednisolone, immunoglobulin therapy, oral naproxen, and vitamin B12 supplementation, among others. We observed that the introduction of vitamin B12 into her treatment plan contributed to combating her anemia effectively. The combination of therapies, especially with vitamin B12, significantly improved her overall health and restored her quality of life.
Our findings highlight the importance of early diagnosis and prompt treatment in patients with complex autoimmune issues. Specifically, vitamin B12 emerges as a critical component in managing anemia related to such conditions. While the study is anecdotal, it reinforces the idea that vitamin B12 can be beneficial in improving anemia outcomes in similarly affected patients.
Read More
9
We explored a case of a 3-year-old girl diagnosed with Imerslund-Gräsbeck syndrome, a condition that causes vitamin B12 malabsorption and leads to anemia. After identifying novel mutations in the AMN gene, we initiated long-term oral vitamin B12 therapy.
Following treatment, her blood tests showed consistent improvement, indicating that oral B12 replacement can be an effective management strategy, especially for patients who can’t tolerate injections. This case underscores the importance of genetic testing for accurate diagnoses.
Following treatment, her blood tests showed consistent improvement, indicating that oral B12 replacement can be an effective management strategy, especially for patients who can’t tolerate injections. This case underscores the importance of genetic testing for accurate diagnoses.
Read More
9
We explored a rare condition called Transcobalamin deficiency, which hinders vitamin B12 transport in the body. This case involved a 2-year-old boy suffering from severe anemia and frequent infections.
After genetic tests revealed a specific mutation, we administered high doses of methylcobalamin. Remarkably, the child's health significantly improved, highlighting the importance of diagnosing and treating this deficiency early to avoid serious complications.
After genetic tests revealed a specific mutation, we administered high doses of methylcobalamin. Remarkably, the child's health significantly improved, highlighting the importance of diagnosing and treating this deficiency early to avoid serious complications.
Read More
User Reviews
USERS' SCORE
Good
Based on 18 Reviews
8.4
- All Reviews
- Positive Reviews
- Negative Reviews
9
Improved energy levels
4 people found this helpful
I took vitamin B12 while following a meat-free diet due to my anemia, and it also helped with my iron deficiency anaemia. My levels of both iron and B12 were very low, but they are interrelated. I noticed an increase in both B12 and iron, along with raised ferritin. The key is to avoid taking them together, spacing them out instead.
Read More
9
Long-term maintenance
2 people found this helpful
I've been using this product for over 10 years to manage macrocytic anaemia and maintain normal levels. It has a slightly sweet and sour taste, is easy to take, and is reasonably priced, which appeals to me since I rely on it regularly.
Read More
9
Improved deficiency
2 people found this helpful
Excellent! This form of vitamin B12 is essential, especially since vitamin B12 deficiency can lead to anaemia. I highly recommend monitoring and addressing this deficiency.
Read More
7.5
Helpful post-surgery
2 people found this helpful
After undergoing gastric resection, I occasionally experience anaemia and discovered that B12 supplementation was beneficial. I've been taking it for several months and feel quite well.
Read More
7.5
Mood enhancer
2 people found this helpful
I love the taste! Initially purchased to address my anaemia, I sometimes take an extra tablet in the afternoon due to its pleasant flavour. I feel more energetic overall, and since starting it, I've not experienced any adverse effects, so I'll continue taking it.
Read More
Frequently Asked Questions
7.5
Helpful post-surgery
2 people found this helpful
After undergoing gastric resection, I occasionally experience anaemia and discovered that B12 supplementation was beneficial. I've been taking it for several months and feel quite well.
9
Improved energy levels
4 people found this helpful
I took vitamin B12 while following a meat-free diet due to my anemia, and it also helped with my iron deficiency anaemia. My levels of both iron and B12 were very low, but they are interrelated. I noticed an increase in both B12 and iron, along with raised ferritin. The key is to avoid taking them together, spacing them out instead.
8
This case explores the journey of a 40-year-old woman who suffered from various nonspecific symptoms, mistakenly attributed to other health issues, for ten years. Her vitamin B12 levels were critically low, ultimately diagnosed as pernicious anemia.
After starting parenteral B12 treatment, we observed significant neurological improvements, underscoring how vital it is to recognize vitamin B12 deficiency as a potential cause of anemia, even when classic symptoms aren't present. This case reminds us to maintain a broad perspective for accurate diagnosis.
After starting parenteral B12 treatment, we observed significant neurological improvements, underscoring how vital it is to recognize vitamin B12 deficiency as a potential cause of anemia, even when classic symptoms aren't present. This case reminds us to maintain a broad perspective for accurate diagnosis.
8
We explored a case involving a 51-year-old Ugandan man who experienced recurring lower limb weakness and was ultimately diagnosed with pernicious anemia. His condition stemmed from vitamin B12 deficiency, confirmed by blood tests showing macrocytic anemia and low cobalamin levels.
With treatment using methylcobalamin injections, he showed significant improvement. This case emphasizes the need for heightened awareness of vitamin B12 deficiency in diagnosing anemia, especially in areas with limited health resources.
With treatment using methylcobalamin injections, he showed significant improvement. This case emphasizes the need for heightened awareness of vitamin B12 deficiency in diagnosing anemia, especially in areas with limited health resources.
9.5
We focused on how oral vitamin B12 could help those with pernicious anemia, where absorption is usually impaired. Participants diagnosed with vitamin B12 deficiency due to this condition took a daily dose of 1000 μg of oral cyanocobalamin.
Over a year, an impressive 88.5% of them no longer showed deficiency after just one month, with significant improvements in vitamin B12 levels and related biological markers. Importantly, these benefits lasted throughout the study period.
Over a year, an impressive 88.5% of them no longer showed deficiency after just one month, with significant improvements in vitamin B12 levels and related biological markers. Importantly, these benefits lasted throughout the study period.
9
We explored how vitamin B12 affects anemia, specifically through its role in correcting deficiencies. The research analyzes oral B12 intake and its absorption, particularly in individuals showing signs of deficiency.
There’s a clear relationship between the amount of B12 consumed and the body’s response. Supplements offering up to 20 µg of B12 daily are deemed safe and unlikely to trigger side effects.
For those severely affected, higher dosages—like 50 µg—may help stabilize abnormal markers in the blood, while foods designed for medical purposes can contain up to 150 µg.
However, anything beyond 200 µg per day should be treated as a drug, as it can effectively address anemia and related symptoms. Importantly, for individuals diagnosed with deficiency, proper medical treatment remains essential, leaning towards higher doses of B12.
There’s a clear relationship between the amount of B12 consumed and the body’s response. Supplements offering up to 20 µg of B12 daily are deemed safe and unlikely to trigger side effects.
For those severely affected, higher dosages—like 50 µg—may help stabilize abnormal markers in the blood, while foods designed for medical purposes can contain up to 150 µg.
However, anything beyond 200 µg per day should be treated as a drug, as it can effectively address anemia and related symptoms. Importantly, for individuals diagnosed with deficiency, proper medical treatment remains essential, leaning towards higher doses of B12.
References
- Mesgarankarimi A, Rezapour M, Tabrizi N. A long-standing undiagnosed case of vitamin B12 deficiency: a case report. J Med Case Rep. 2025;19:151. 10.1186/s13256-025-05149-7
- Upadhyay RP, Chowdhury R, Mundra S, Taneja S, Jacob M, et al. Comparative effectiveness of daily therapeutic supplementation with multiple micronutrients and iron-folic acid versus iron-folic acid alone in children with mild-to-moderate anaemia in rural India: an open-label, randomised controlled trial. Lancet Glob Health. 2025;13:e497. 10.1016/S2214-109X(24)00559-X
- Mswelo VE, David MM, Banturaki A, Munyambalu DK, Hassan HA, et al. Rural health challenges in Western Uganda: pernicious anemia masquerading as recurrent lower limb weakness-a case report. J Med Case Rep. 2025;19:60. 10.1186/s13256-025-05095-4
- Hirakata K, Ishii Y, Yoshida T, Tanaka F, Nakae Y. [A case of diagnosed pernicious anemia and subacute combined degeneration of the spinal cord with abnormally elevated serum vitamin B12]. Rinsho Shinkeigaku. 2025;65:120. 10.5692/clinicalneurol.cn-002023
- Zhang D, Liu S, Xi B, Zhu Y, Chen Y, et al. Imerslund-Gräsbeck syndrome in a child with a novel compound heterozygous mutations in the AMN gene: a case report. Ital J Pediatr. 2024;50:191. 10.1186/s13052-024-01757-z
- Di Sario F, Piloni F, Gasparini F, Serpetti E, Bruschi B, et al. Severe pancytopenia at the presentation of Imerslund-Gräsbeck syndrome in a 23-month-old Italian boy. Ital J Pediatr. 2024;50:186. 10.1186/s13052-024-01759-x
- Shen M, Luo X, Wu C, Wang J, Wang Z, et al. Pernicious anemia is a common cause of cobalamin deficiency-caused megaloblastic anemia in Hainan, China. Hematology. 2024;29:2399375. 10.1080/16078454.2024.2399375
- Iqbal N, Meghani MA, Khalid W, Ansari AH, Ansari MUH, et al. Transcobalamin deficiency - a rare genetic defect in transportation of cobalamin; case report. Ann Hematol. 2024;103:3243. 10.1007/s00277-024-05878-7
- Song JH, Park SH, Cho M, Kim YM, Hyung WJ, et al. Proximal Gastrectomy Is Associated with Lower Incidence of Anemia and Vitamin B12 Deficiency Compared to Total Gastrectomy in Patients with Upper Gastric Cancer. Cancer Res Treat. 2025;57:174. 10.4143/crt.2024.319
- Lacombe V, Vinatier E, Roquin G, Copin MC, Delattre E, et al. Oral vitamin B12 supplementation in pernicious anemia: a prospective cohort study. Am J Clin Nutr. 2024;120:217. 10.1016/j.ajcnut.2024.05.019
- Chakrabarti S, Ajjampur SSR, Waddington HS, Kishore A, Nguyen PH, et al. Deworming and micronutrient status by community open defecation prevalence: An observational study using nationally representative data from India, 2016-2018. PLoS Med. 2024;21:e1004402. 10.1371/journal.pmed.1004402
- Sawada Y, Sakamoto K, Tsukamura A, Sawai C. Vitamin B12 deficiency-induced megaloblastic anemia in a pediatric patient with autism spectrum disorder with a chronically unbalanced diet. Int J Hematol. 2024;119:613. 10.1007/s12185-024-03759-3
- Sachdeva M, Purohit A, Malik M, Jain L, Pradhan P, et al. Comparison of Efficacy and Safety of Parenteral vs Oral Route of Vitamin B12 Supplementation for the Treatment of Vitamin B12 Deficiency Anemia in Children: A Systematic Review. Nutr Rev. 2025. 10.1093/nutrit/nuae227
- Obeid R, Geisel J, Pietrzik K, Andres E. A Framework to Guide Defining an Upper Threshold of Crystalline Vitamin B12 in Foods and Food Supplements. Curr Nutr Rep. 2025;14:32. 10.1007/s13668-025-00622-7
- Belhaj R, Maaloul I, Kolsi R, Rekik T, Chabchoub I, et al. Study of clinical manifestations and etiologies of megaloblastic anemia in children. Transfus Clin Biol. 2025. 10.1016/j.tracli.2025.01.006
- Goncalves H, De Oliveira Simões F, Sá R, Fraga Campos B, Domingues RM, et al. Severe Symptomatic Anemia as a Rare Initial Manifestation of Type 3 Polyglandular Autoimmune Syndrome: A Case Report. Cureus. 2024;16:e75800. 10.7759/cureus.75800
- Moreira AP, Vasconcelos M, Costa E Silva T, Relvas C, Espírito Santo J. An Unusual Case of Hemolytic Anemia: A Case Report. Cureus. 2024;16:e75676. 10.7759/cureus.75676
- Lang C, Huang P, Gao J, Chen Y, He Z. Co-existence of autoimmune polyglandular syndrome type 3b and undifferentiated connective tissue disease with subacute combined degeneration of spinal cord in children: a case report and literature review. BMC Pediatr. 2024;24:817. 10.1186/s12887-024-05262-4
- Tavares Pereira J, Barbosa Barroso J, Azevedo A, Ribeiro A, Tonel C. Pseudo-Thrombotic Microangiopathy Secondary to Vitamin B12 Deficiency. Cureus. 2024;16:e73620. 10.7759/cureus.73620
- Jamil M, Nasser Z, Jamil D, Sheqwara JZ. Unmasking Vitamin B12 Deficiency Misdiagnosed as Myelodysplastic Syndrome. Case Rep Hematol. 2024;2024:3258227. 10.1155/2024/3258227
- Memon NM, Conti G, Brilli E, Tarantino G, Chaudhry MNA, et al. Comparative bioavailability study of supplemental oral Sucrosomial vs. oral conventional vitamin B12 in enhancing circulatory B12 levels in healthy deficient adults: a multicentre, double-blind randomized clinical trial. Front Nutr. 2024;11:1493593. 10.3389/fnut.2024.1493593
