

⚡ Elevate your energy, focus, and recovery—because average just won’t do.
THORNE B-Complex #12 delivers a scientifically formulated blend of eight active B vitamins, including methylcobalamin B12 and folate, designed to optimize nervous system function, boost cellular energy production, and support mood and recovery. Third-party tested and trusted by elite athletes and healthcare professionals, this premium supplement ensures maximum absorption and purity in every capsule.


















| ASIN | B0797JXKL9 |
| Best Sellers Rank | #2,883 in Health & Household ( See Top 100 in Health & Household ) #13 in Vitamin B-Complex Supplements #292 in Diet & Sports Nutrition |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,841) |
| Date First Available | September 13, 2007 |
| Is Discontinued By Manufacturer | No |
| Item model number | B112 |
| Manufacturer | Thorne Research |
| Product Dimensions | 2.09 x 2.09 x 3.72 inches; 1.76 ounces |
T**E
🔬 Honest Review, Pure & Effective Energy Boost!
I’ve been taking THORNE Vitamin B12 for 5 months now, and I can confidently say it’s one of the best B12 supplements I’ve tried! Here’s my honest breakdown: 🔹 What I Love: ✔️ Highly absorbable formula, THORNE uses methylcobalamin, the active form of B12, making it easier for the body to absorb. ✔️ Energy & mental clarity, Since taking this daily, I’ve noticed a huge improvement in my energy levels, and I no longer feel sluggish throughout the day. It has also helped with my mental focus and concentration. ✔️ Supports recovery & mood, This has been a game changer for me in recovering from sleep deprivation and anxiety. I feel more balanced and less fatigued. ✔️ Clean, high-quality ingredients, No unnecessary fillers, additives, or artificial ingredients. THORNE is a trusted brand that prioritizes purity. ✔️ No weird aftertaste, Some B12 supplements have a strong taste, but this one is neutral and easy to take. 🔹 What Could Be Better: ❌ Small bottle, I wish it came in a larger size, especially since I take 2 daily! ❌ Not the cheapest option, It’s a premium supplement, but given the quality, I think it’s worth it. 🔹 My Personal Experience: I originally started taking B12 to help with energy, nervous system support, and recovery from stress, and this supplement has exceeded my expectations. I feel more alert, less anxious, and overall healthier since incorporating it into my routine. It’s now a staple in my daily supplements! 🔹 Final Verdict: 10/10 ⭐️ Would I recommend it? Absolutely! If you need a high-quality, effective B12 supplement for energy, brain function, and nervous system support, this is one of the best options out there.
A**E
Love them!
I have used this for years. It is a good value for the price to get natural quality and absorption in a capsule. There is no taste or smell which is good because I gag easily.
D**N
Good vitamins from a good company.
I'm a fan of this. Helps my energy levels, helps my gut motility. It's not always necessary, and you can tell by the color of your urine after taking it. Tastes fine, isn't too big, doesn't have an off putting smell. Can't speak to it's absorption, but I can say the effects seem to work. Thorne seems like a good brand.
A**L
Helped my mood and my 90-year-old father to get off antidepressants!
I stumbled upon this wonderful product and so glad I did! I have the C677T MTHFR mutation, as well as a COMT mutation. MTHFR converts B-12 and Folate (and other vitamins) to the active/methylated forms that can be used by the body and cross the blood brain barrier. Because I have both MTHFR and COMT mutations, it is best that I take B12 in the form of Adenosylcobalamin (along with Methylcobalamin), which this product has. I was taking Thorne Methyl Guard Plus, which has a higher potency of Methylfolate and B12 Methylcobalamin (and no Adenosylcobalamin), but noticed it made me a little irritable, edgy. So after watching a presentation by Dr. Ben Lynch (MTHFR.net) – a leader in MTHFR research - I learned that B12 Adenosylcobalamin can help reduce irritability, anger, etc. that those with COMT mutations can have when they take too much methylfolate. This supplement has helped “take the edge off” (pun intended). This particular supplement formulation seems to work for me, my son and my father. I have noticed increased energy and mood stability and less irritability in all of us. And, as for my 90-year-old father, he was on antidepressants for 10 years (as well as on and off of them for the prior 55 years). 2014 blood work showed B12 deficiency, so he started B12 (cyanocobalamin) shots, but saw no improvement, and his antidepressants were gradually increased. In October 2015, his blood work showed he was in range for B12 and folate, but his homocysteine level was high. Because of the research I had done on MTHFR, I knew right away that my dad had an MTHFR mutation, because (1) when blood homocysteine is elevated while B12 and Folate are in the normal range, that indicates the body is not properly converting folic acid to methylated folate and B12 (cyanocobalamin-synthetic form) to methylated B12 (active forms used by the body); (2) I had to get my MTHFR mutation from a parent. The form of B12 in the shots my dad was taking monthly is cyanocobalamin, which is synthetic and cheap and requires properly working MTHFR for conversion. So keep in mind that B12 and folate levels in blood work alone is not an accurate indicator of whether or not the body is actually converting to active forms required for the body to utilize. The addition of a homocysteine test is more revealing. Since my dad started taking Thorne B Complex #12, he is completely off of antidepressants and doing well! His doctors are intrigued and impressed. I gave them the information and hope they will use it to help other patients. Every person is different. It is best to start with lower potency supplements and work your way up to prevent reactions (in my case, reaction to too much methylfolate). Dr. Ben Lynch has two MTHFR mutations himself, so he has a personal interest in this field. MTHFR.net is a FABULOUS resource for those struggling with MTHFR mutations, or those who want to find out if they have such mutations. It is now believed that at least 50% of the population has some MTHFR variant (SNPs), which can cause a host of problems, including fibromyalgia, miscarriages, severe depression, autism and much more. While there is typically not one “smoking gun” that causes all our ailments, I believe MTHFR is a good place to start. MTHFR.net can tell you which tests to have and where to get them. I hope this helps someone!
W**E
Thorne B-Complex #12 has been a total game-changer for my energy levels. It’s like a secret weapon for those dragging afternoons—I feel more focused and less like I need a caffeine IV to get through the day. The active forms of B12 and folate make a big difference, especially if your body struggles to process the synthetic versions found in other supplements. I also love that it’s gentle on the stomach. I’ve taken it on an empty stomach without any issues, which is rare for a B-complex. The capsules are small and easy to swallow, and there’s no weird aftertaste or bright yellow “B-vitamin pee” (if you know, you know). The only downside is the price—it’s on the premium side, but with Thorne’s reputation for quality and clean ingredients, it’s worth it. Plus, with only one capsule a day, the bottle lasts longer than you’d think. If you’re looking for a high-quality B-complex that boosts energy, supports mood, and doesn’t mess with your stomach, this is it. 4.8/5
D**R
Great product but you pay for it
S**N
Took a couple of extra weeks to arrive from the others ordered on the same day, however, the product itself is good
M**O
This is the best blend of B complex and 12 one can find. It gives you instant boost and does not. Cause any nausea. Extremely gentle on stomach and you actually feel that supplement is working
م**م
رائع
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2 months ago
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