SCIENTIFIC SCORE
Moderately Effective
Based on 5 Researches
8
USERS' SCORE
Good
Based on 71 Reviews
8.9
Supplement Facts
Serving Size: 2 Vegetarian Capsules
Amount Per Serving
%DV
Thiamine (vitamin B1) (as thiamine HCl)
100 mg
8333%
Riboflavin (vitamin B2) (as riboflavin and riboflavin 5'-phosphate)
75 mg
5769%
Niacin (as niacinamide and niacin)
100 mg•
625%
Vitamin B6 (as pyridoxine HCl and pyridoxal 5' phosphate)
100 mg
5882%
Folate (as L-5-methyltetrahydrofolate calcium salt)
680 mcg○
170%
Vitamin B12 (as methylcobalamin)
300 mcg
12500%
Biotin
1000 mcg
3333%
Pantothenic acid (as D-calcium pantothenate)
500 mg
10000%
Calcium (as D-calcium pantothenate, dicalcium phosphate)
50 mg
4%
Inositol
100 mg
**
PABA (para-aminobenzoic acid)
50 mg
**

Top Medical Research Studies

8
Pernicious anemia case in Uganda
Rural health challenges in Western Uganda: pernicious anemia masquerading as recurrent lower limb weakness-a case report.
Important for diagnostic practices
We focused on a case of pernicious anemia in a 51-year-old Ugandan man who presented with recurring lower limb weakness. After initial treatment for vitamin B12 deficiency years ago and further testing, we confirmed his diagnosis of pernicious anemia marked by low cobalamin levels. Thanks to timely parenteral methylcobalamin therapy, he showed improvement. This case underscores the importance of recognizing vitamin B12 deficiency, especially in rural and resource-limited settings, to address neurological symptoms quickly.
Read More
8
Pernicious anemia misdiagnosed as fibromyalgia
A long-standing undiagnosed case of vitamin B12 deficiency: a case report.
High relevance for clinical practice
We explored a notable case of a woman suffering from pernicious anemia, an autoimmune condition that can be misdiagnosed due to its vague symptoms like fatigue and cognitive issues.

After years of struggling with these nonspecific symptoms, her low vitamin B12 levels were finally identified as the underlying cause.

Upon receiving treatment with vitamin B12, she experienced neurological improvements, highlighting the importance of recognizing this deficiency, even when traditional anemia indicators are absent.
Read More
8
Nicotinamide suppresses autoimmune activation
Nicotinamide Suppresses Hyperactivation of Dendritic Cells to Control Autoimmune Disease through PARP Dependent Signaling.
Highly relevant therapeutic insights
We explored the influence of Nicotinamide (NAM), a form of vitamin B3, on dendritic cells (DCs) in autoimmune diseases. Our research indicates that NAM can effectively reduce the overactivation of DCs, helping to ease symptoms in conditions like psoriasis.

Through detailed analysis of available studies, we found that NAM affects DCs via a specific signaling pathway, ultimately offering a potential new direction for treatment. Importantly, these findings highlight NAM’s significant role in managing autoimmune disorders related to immune response regulation.
Read More

Most Useful Reviews

9.5
Visible improvements
An excellent form of B vitamins. I noticed a much calmer and cheerier mood in my teenager, along with increased strength and endurance. I'm very pleased with the effects of this vitamin. We will undoubtedly order more from this company! The results are evident, as blood tests for my child with a B12 deficiency returned to normal. This form of the drug truly works and is well absorbed!
Read More
9.5
Better overall wellbeing
Following my doctor's recommendation, I ordered this product containing all the B vitamins. After just a few days, I feel significantly better. Previously, I was taking vitamin D, but now my mood is better, I've gained energy, and apathy is fading. I highly recommend it to everyone! The order arrived swiftly—thank you very much!
Read More
9.5
Improved health outcomes
I purchased this complex for myself and my parents on my doctor's advice due to iron deficiency anaemia and high homocysteine levels. My doctor recommended several pharmacy drugs that contained harmful substances, but this bioactive complex has everything necessary. I am extremely satisfied with its effects, and there are no observed side effects. I feel great! Its price and quality ratio are excellent.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 5 Researches
8
  • All Researches
9
Biotin deficiency mimics neurological disorders
Atypical presentation of biotinidase deficiency: masquerading neuromyelitis optica spectrum disorder.
Relevant for clinical diagnosis
We explored three cases of biotinidase deficiency (BTD) that were misdiagnosed as neuromyelitis optica spectrum disorder (NMOSD) due to similar symptoms and neuroimaging results. Initially, two patients responded to immune therapy but later relapsed, while one showed no improvement. Interestingly, after timely diagnosis and biotin supplementation, two patients exhibited remarkable recoveries in both motor function and vision. This highlights the critical need for accurate diagnosis, as early treatment of BTD can lead to significant improvements.
Read More
8
Pernicious anemia misdiagnosed as fibromyalgia
A long-standing undiagnosed case of vitamin B12 deficiency: a case report.
High relevance for clinical practice
We explored a notable case of a woman suffering from pernicious anemia, an autoimmune condition that can be misdiagnosed due to its vague symptoms like fatigue and cognitive issues.

After years of struggling with these nonspecific symptoms, her low vitamin B12 levels were finally identified as the underlying cause.

Upon receiving treatment with vitamin B12, she experienced neurological improvements, highlighting the importance of recognizing this deficiency, even when traditional anemia indicators are absent.
Read More
8
Pernicious anemia case in Uganda
Rural health challenges in Western Uganda: pernicious anemia masquerading as recurrent lower limb weakness-a case report.
Important for diagnostic practices
We focused on a case of pernicious anemia in a 51-year-old Ugandan man who presented with recurring lower limb weakness. After initial treatment for vitamin B12 deficiency years ago and further testing, we confirmed his diagnosis of pernicious anemia marked by low cobalamin levels. Thanks to timely parenteral methylcobalamin therapy, he showed improvement. This case underscores the importance of recognizing vitamin B12 deficiency, especially in rural and resource-limited settings, to address neurological symptoms quickly.
Read More
8
Nicotinamide suppresses autoimmune activation
Nicotinamide Suppresses Hyperactivation of Dendritic Cells to Control Autoimmune Disease through PARP Dependent Signaling.
Highly relevant therapeutic insights
We explored the influence of Nicotinamide (NAM), a form of vitamin B3, on dendritic cells (DCs) in autoimmune diseases. Our research indicates that NAM can effectively reduce the overactivation of DCs, helping to ease symptoms in conditions like psoriasis.

Through detailed analysis of available studies, we found that NAM affects DCs via a specific signaling pathway, ultimately offering a potential new direction for treatment. Importantly, these findings highlight NAM’s significant role in managing autoimmune disorders related to immune response regulation.
Read More
7
Vitamin B may indicate GBS severity
Correlation of Serum Vitamin B and Muscle Enzyme (CK-NAC) Level with Severity of Guillain-Barre Syndrome and Its Prediction in Respiratory Failure.
Moderate relevance to autoimmune research.
We aimed to see if vitamin B levels could signal the severity of Guillain-Barré syndrome (GBS) and its potential for complications like respiratory failure. Our study involved 50 GBS patients, where we examined their vitamin B and creatine kinase levels alongside their motor abilities.

Interestingly, we found that 44% of patients had low vitamin B levels, which linked strongly to GBS severity. However, while vitamin B showed predictive value, the creatine kinase levels did not relate to GBS severity.
Read More

User Reviews

USERS' SCORE
Good
Based on 71 Reviews
8.9
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Visible improvements
An excellent form of B vitamins. I noticed a much calmer and cheerier mood in my teenager, along with increased strength and endurance. I'm very pleased with the effects of this vitamin. We will undoubtedly order more from this company! The results are evident, as blood tests for my child with a B12 deficiency returned to normal. This form of the drug truly works and is well absorbed!
Read More
9.5
Better overall wellbeing
Following my doctor's recommendation, I ordered this product containing all the B vitamins. After just a few days, I feel significantly better. Previously, I was taking vitamin D, but now my mood is better, I've gained energy, and apathy is fading. I highly recommend it to everyone! The order arrived swiftly—thank you very much!
Read More
9.5
Improved health outcomes
I purchased this complex for myself and my parents on my doctor's advice due to iron deficiency anaemia and high homocysteine levels. My doctor recommended several pharmacy drugs that contained harmful substances, but this bioactive complex has everything necessary. I am extremely satisfied with its effects, and there are no observed side effects. I feel great! Its price and quality ratio are excellent.
Read More
9.5
Helpful for anxiety
This product has drastically improved my seborrheic dermatitis, scalp itching, skin inflammation, hay fever, and allergies. I noticed significant improvement in my anxiety disorder and depression. The quality and quantity surpass supplements available in Japan. I feel so much better after the niacin flush; it's a normal reaction related to vitamin B3 niacin.
Read More
9.5
Relief from symptoms
Life Extension Complete B is undoubtedly the best vitamin B complex I've found, both for quality and price. The standout feature is the Folate in its bioavailable form, L-5-methyltetrahydrofolate. Moreover, B12 is in the preferred methylcobalamin form. In the Philippines, the available B complexes are less effective and more expensive. Both my wife and I have been taking this for two months alongside Magnesium Taurate, which has alleviated our nerve-related symptoms like tingling in our fingers and toes, and it has improved our sleep. We received our order within two weeks, which was reasonable given the Covid-19 restrictions. We will continue using this as our regular supplement and highly recommend Life Extension Complete B.
Read More

Frequently Asked Questions

No FAQs are available for this product and symptom.
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