THORNE - Basic B-Complex - Tissue-Ready Vitamin B Complex Supplement with Choline - Supports Cellular Energy Production, Brain Health & Red Blood Cell Formation* - Gluten-Free - 60 Servings
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Availability:
Only 5 left in stock, order soon!
Arrives
Friday, May 8
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Features
- Complete Formula: Each capsule provides a balance of 8 water-soluble B vitamins (B1, B2, B3, B5, B6, B7, B9, and B12) plus choline in their active, tissue-ready forms to enhance bioavailability in the body*
- Cellular Energy: B vitamins support the conversion of carbohydrates into fuel for the body, as well as the metabolism of fats and proteins, to enhance cellular energy production and healthy red blood cell formation*
- Cognitive Health: Supports an optimally functioning nervous system, a healthy brain, and nerve cells by serving as enzymatic cofactors to help make numerous brain neurotransmitters and support a healthy mindset*
- 4 Rounds of Testing: Our state-of-the-art laboratories enable us to conduct 4 rounds of testing on every product, from analyzing the purity of raw materials to confirming the shelf life of finished formulas
- Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)
Is Discontinued By Manufacturer : No
Product Dimensions : 2.09 x 2.09 x 3.72 inches; 2.4 ounces
Item model number : B104
Date First Available : October 2, 2001
Manufacturer : Thorne Research
Best Sellers Rank: #1,427 in Health & Household (See Top 100 in Health & Household) #5 in Vitamin B-Complex Supplements #142 in Diet & Sports Nutrition
#5 in Vitamin B-Complex Supplements:
#142 in Diet & Sports Nutrition:
Customer Reviews: 4.7 4.7 out of 5 stars (4,331)
Brand Name: THORNE
Item Form: Capsule
Primary Supplement Type: B-Complex, Choline
Diet Type: Gluten Free
Flavor: Unflavored
Product Benefits: Energy Management
Age Range Description: Adult
Specific Uses For Product: Brain
Number of Items: 1
Dosage Form: Capsule
Global Trade Identification Number: 32
UPC: 693749104032
Manufacturer: Thorne Research
Model Number: B104
Manufacturer Part Number: B104
Unit Count: 60 Count
Item Weight: 2.4 ounces
Item Dimensions: 2.09 x 2.09 x 3.72 inches
Allergen Information: Dairy Free, Fish Free, Shellfish Free, Soy Free
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, May 8
This item is non-returnable:
Non-returnable due to Food safety reasons
View our full returns policy here.
Non-returnable due to Food safety reasons
View our full returns policy here.
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Top Amazon Reviews
Amazing!! This Thorne complex B will give you energy without the crash. You just can do more and then you naturally can get sleep. Just don’t take after 10-11am in the morning because it may affect your body getting tired for bedtime. I took it at noon and I had a hard time getting sleepy at 9-10pm.
Reviewed in the United States on March 23, 2026 by Shauna07
Updated as of 10/10/2022: I have known that I have the MTHFR gene mutation for about 12 years now. Even after diagnosis, I was using a few other B-complexes which I though were o.k. for my condition, but I did not realize that the B6 was not methylated. Turns out B6 has to be in the form of Pyridoxal 5-Phosphate, NOT Pyroxidine, to be more bioavailable to those who have MTHFR and do not methylate properly. I never knew that until about 5 years ago; the doctor I tested with didn't explain that part. After this discovery, I researched various B-complex formulas, and picked this one. I also wanted a B-complex that had methylated folic acid and that did not have a super high dose of methylcobalamin (B12), since my blood was testing high for B12 already. This formula fit the bill very well. A few other tips: 1) The amount of methylated folic acid per capsule here is low (400mcg). If you only take one capsule per day, I would also recommend taking additional methyl-folate if you do not methylate. However, please first discuss with your chosen physician, if possible. 2) If you take B6 in its methylated form of Pyridoxal 5-Phosphate (a.k.a. P5P), you also need to take magnesium so that the P5P pathway will work properly. .Without at least some magnesium to work with, you may end up feeling tired and with lower energy, which is probably not what you want. 3) B6 - along with certain co-factors like magnesium, zinc, vitamin-C, and folate, is necessary for the production of certain neurotransmitters like GABA and norepinephrine, as well as for the conversion of tryptophan or 5-HTP into serotonin. So you may want to consider taking some of these additional co-factors to enhance your results with this product (only folate is included in this product, you would have to buy the rest separately). Also note: Tyrosine is also required for the synthesis of dopamine, but I have not tried taking that yet. I believe I have been low in neurotransmitter production, and my nervous system has been a mess, due to a 12-year highly stressful job and the resulting sky-high cortisol levels (Thankfully, I am no longer at that job!). It's been getting better slowly now.....it takes time and it's also very helpful to decrease your sugar and simple carb intake (e.g. white flour). 4) B6 and zinc are both needed for the production of pancreatic enzymes and hydrochloric acid, so if you have low stomach acid / poor digestion, this may help. (Zinc is not included in this formula but you may wish to add it if you are looking to help your production of digestive enzymes) In summary, this formula really helps with all the above, and it may help you too. Douglas Labs also makes a similar formula although it has some variation in it's mix. Best wishes to you. Addendum, additional updates since 2017: I had started taking this Thorne Basic B once a day plus an additional 50mg -100mg of P5P back in 2017-2018. Sometimes I would miss a day of both, I'm not perfect :). Eventually I got more disciplined and was taking the Basic B twice a day. I felt that was working better for me. Overall I can say for sure that the combo has helped to calm down my nervous system. I even went through some serious surgeries and medical procedures (extremely stressful) in 2017 and 2018, and in the past I would be a nervous wreck 24/7 and would not be able to calm down. However, I no longer get that uncontrollable anxiety anymore, although there can be some days where I can still fall into a depressive state. Magnesium powder or capsules have also helped keep me calmer (at bedtime), and I have taken some Skullcap, Ashwagandha, and/or Passionflower at times to further calm myself down as needed. Since 2018 I have also tried other methylated B-complex formulas like MethylPro, Douglas Labs, Pure Encapsulations, Nordic Naturals, and Metabolic Maintenance - just to experiment. However I keep returning to this one because it seems to work the best for my physiology. Together with the P5P, this has been like a lifeline for me. I hope it can work for you too if you decide to try it.
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Reviewed in the United States on June 25, 2017 by Banyon G.
Excellent quality. No substantial odors or offputting taste. I take it in the morning on a mostly empty stomach or just after having some black tea and so far no issues and no bad side effects. The capsule is fairly large but I prefer taking a single large capsule like this one over taking two capsules, as I've had to do for other supplements. I noticed positive improvements in my mood after taking one pill daily for about two weeks. Would recommend.
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Reviewed in the United States on February 16, 2026 by Peter Irwin Blackwell
Give me energy and no stomach upset.
Reviewed in the United States on February 28, 2026 by Amazon Customer
I’ve been taking this B-complex for about a week to a week and a half and have noticed a clear improvement in daytime energy. Before starting it, I would often get very sleepy from around noon to 4 p.m. during work. Since taking it, I feel more alert and don’t experience that same mid-day fatigue. The only noticeable change has been bright yellow urine, which is normal with B vitamins and most likely due to riboflavin (B2). No other side effects for me. I also want to clarify that flushing some people report is typically linked to niacin (B3), not biotin, and I personally have not experienced any flushing. I also tried to include photos, but my phone camera is not able to properly capture the black light effect. However, if you have access to a black light, you may be able to see the riboflavin more clearly in the capsule, as it fluoresces under UV light. Overall, this seems to be a high-quality B-complex that has helped with energy levels, with no issues besides the expected urine color change.
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Reviewed in the United States on April 23, 2026 by Ben Walker
Great supplement will order again
Reviewed in the United States on April 9, 2026 by Jenae Wiley
This was a recommended brand & have been happy. Test scores tell me it works
Reviewed in the United States on March 27, 2026 by Rick Ottman
I really like this Thorne Basic B Complex as a straightforward daily B supplement. I personally take it to support overall energy, stress resilience and a healthy nervous system, and I do feel generally better and more “even” on days I take it. It also seems to help my nail strength over time. The formula uses active forms like methylfolate and methylcobalamin, which I look for, and the ingredient list is clean with no sugar or unnecessary fillers. The capsule is a manageable size and easy to swallow, with no real taste or aftertaste. For the quality of the forms and doses you get, I think it’s good value for money, and overall it feels like a solid, well-formulated B complex from a brand I trust.
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Reviewed in the United States on December 2, 2025 by S.Foxy - Real Reviews