Thorne   B-Complex #12 - 60 Capsules

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Item Number: TR1009
Serving Size: 1 Capsule Servings per Container: 30
Price per Serving:  $0.63 Price per Unit*: $0.32 per Capsule
* Price Per Unit may reflect product's price per capsule, tablet, ounce, fluid ounce, etc.
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B-vitamin complex with extra B12 and folate

B Complex #12 supports energy production and healthy neurological function.* Unlike many multi-B vitamins‚ it contains the active forms of eight water-soluble B vitamins.*

B-Complex #12 offers a complete vitamin B complex‚ with added vitamin B-12 and folate. Supplementing with the active forms of the B vitamins is extremely important to everyone‚ especially individuals who might not be able to convert non-active B vitamins to their active forms in the liver because of compromised liver function‚ poorly functioning enzymes‚ digestive disorders‚ or increasing age.* Vitamin B12 and folate are necessary for normal red blood cell formation‚ tissue and cellular repair‚ normal methylation and homocysteine metabolism‚ and DNA synthesis.* Thorne's B-Complex #12 supplies the active form of vitamin B12 – methylcobalamin – as well as the active form of folate – 5-MTHF. The other bioactive forms of the B vitamins in each capsule ensures you will get the most bioavailable vitamin B complex available.* B-Complex #12 is not derived from yeast.

Most of the B vitamins‚ with the exception of vitamin B12‚ are not stored in the body; consequently‚ they must be acquired daily from the diet in order to maintain optimal health.*

Vitamin B12 deficiency can be manifest with varying degrees of mental changes‚ such as confusion and irritability.* Certain prescription medications (for seizures‚ diabetes‚ arthritis‚ and cancer) can cause a deficiency of these important vitamins. The incidence of vitamin B12 and/or folate deficiency is high among the elderly. Pregnant women require an increased amount of folate for proper fetal development.* A woman who has a folate deficiency prior to pregnancy can expect that deficiency to be intensified during pregnancy.

B Complex #12 includes eight water-soluble B vitamins: thiamin (vitamin B1); riboflavin/riboflavin 5'-phosphate (vitamin B2); niacinamide (vitamin B3); pantothenic acid (vitamin B5); pyridoxine/pyridoxal 5'-phosphate (vitamin B6); methylcobalamin (vitamin B12); 5-MTHF (folate); and biotin; plus choline. Although each B vitamin is chemically distinct‚ they often work synergistically in various biochemical functions throughout the body – from cellular energy production‚ to healthy red blood cell formation‚ to healthy neurological function.*

These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

  • MFG # B112
  • UPC # 693749112037
Official Website:

Serving Size: One Capsule
Servings Per Container: 60

One Capsule Contains: / %DV

Thiamin (as Thiamin HCl) 40 mg / 3‚333%
Riboflavin (25 mg as Riboflavin and 3.6 mg as Riboflavin 5'-Phosphate Sodium) 28.6 mg / 2‚200%
Niacin (as Niacinamide) 80 mg / 500%
Vitamin B6 (20 mg as Pyridoxine HCl and 3.4 mg as Pyridoxal 5'-Phosphate) 23.4 mg /1‚376%
Folate (400 mcg as L-5-Methyltetrahydrofolate† from L-5-Methyltetrahydrofolic Acid‚ Glucosamine Salt) 667 mcg DFE / 167%
Vitamin B12 (as Methylcobalamin) 600 mcg / 25‚000%
Biotin 80 mcg / 267%
Pantothenic Acid (as Calcium Pantothenate) 45 mg / 900%
Choline (as Choline Citrate) 14 mg / 3%

Other Ingredients: Hypromellose (derived from cellulose) capsule‚ Microcrystalline Cellulose‚ Calcium Laurate‚ Silicon Dioxide.

†This product uses Gnosis S.p.A.'s L-5-Methyltetra-hydrofolic Acid‚ Glucosamine Salt (Quatrefolic®). Quatrefolic is a registered trademark of Gnosis S.p.A.

Gluten Free.

Take 1 capsule one to three times daily or as recommended by your health-care practitioner.

TAMPER EVIDENT: Use only if bottle is sealed. Store tightly sealed in a cool‚ dry place.

If pregnant‚ consult your healthcare practitioner before using this product.


5-methyltetrahydrofolate (5-MTHF) supplementation is not recommended concurrent with methotrexate cancer therapy‚ as it can interfere with methotrexate's anti-neoplastic activity; however‚ this folate source has not been shown to interfere with the anti-inflammatory activity of methotrexate. An individual taking methotrexate for psoriasis or rheumatoid arthritis can safely take a supplement containing folate.

  • Egg Free
  • Gluten Free
  • High Fructose Corn Syrup Free
  • Nut Free
  • Peanut Free

Ratings and Reviews

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  • 4.8
5 32
  • 32 Reviews
    • Verified Buyer

      B complex by Thorne

      from Lexington, Ky on 5/05/2021
      This has helped me lower my stress and I believe I have clearer thinking. I feel better taking a B-complex supplement for a healthier body.


      Easy to swallow


      I cannot think of a thing that I dislike about this.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Excellent B Complex

      from ASHBURN VA on 9/13/2020
      Provides good energy boost. Vitamin Bs are not stored in the body so need to be replenished on daily basis. Thorne is an excellent company.


      Energy boost. Easy to swallow.


      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Love it

      from San Diego CA on 7/28/2020
      I love this product.
      review-checkI would recommend this item to a friend.
    • B-Complex#12

      from FL on 12/29/2019
      The rep was wonderful....A very esy transaction to make
      review-checkI would recommend this item to a friend.
      1 of 1 people found the following review helpful.
    • Verified Buyer

      Thorne B-Complex

      from MISHAWAKA IN on 7/27/2019
      I was having a lot of leg and feet pain every morning when I woke up. I started taking Thorne b-complex and also vitamin-d, after taking these for 2 months the pain is not as bad. It was my first time trying this b-vitamin. I will continue to use this and also buy some for my mom to see if it will help her.


      Helped with nerve pain


      Turned urine bright yellow
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Great Product! Highly Recommend!

      from Indiana on 1/29/2019
      I switched to this B-Complex #12 by Thorne Research from another supplement (another brand) after identifying I have the MTHFR gene mutation. I was surprised at how much better I felt taking it. After about two months, I had to discontinue for 30 days to take a blood test (unrelated but it was in hopes to participate in a clinical trial so I had to comply with their wishes). It was a long brutal 30 days. After the 30 days were up, I started taking this product again and my symptoms went away again. There is no doubt in my mind that this product has helped me. I would highly recommend it to others.


      Great quality. Methylated so it's okay for folks with MTHFR Gene mutation.


      review-checkI would recommend this item to a friend.
      1 of 1 people found the following review helpful.
    • Verified Buyer

      Great Product!

      from Maryland on 7/26/2018
      B Complex #12 by Thorne Research was recommended by my integrated medicine professional. Been taking it for about 6 months and positive results are well documented for both myself and my son. 
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Just what the doctor ordered!

      from VALDOSTA GA on 6/01/2018
      B Complex #12 by Thorne Research works well! Taking this gives me the energy I was lacking!
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Thorne B-Complex #12 works!

      from Colorado on 2/22/2016
      Thorne products are great ! NO fillers, and most often no soy, which I cannot do. B Complex #12 by Thorne Research are great for adrenal help and stress - which is what my doctor has me taking them for. I alternate these with the B- Stress by Thorne - which has the same B's, but varying amounts.




      review-checkI would recommend this item to a friend.
    • Finding Perfect B

      from Everett, WA on 11/04/2014
      Are there such thing as perfect B? Thorne Research comes close to it. B-Complex #12 does what my sweetie needed when his doctor told him he needs some to add to his regiment.


      No smelly B pee.


      Gets bad too fast.
      review-checkI would recommend this item to a friend.
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If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Your healthcare professional is the best source for guidance before beginning an exercise or nutritional supplement program.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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