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Source Naturals

Advanced B-12 Complex™, 60 Lozenges

4.7 · 456 reviews
1,921 ₽

Dietary Supplement Suitable for Vegetarians Advanced B-12 Complex™ combines the two active, coenzymated forms of B-12 - methylcobalamin and adenosylcobalamin (dibencozide) - with hydroxocobalamin, a form that is transported throughout the body in the bloodstream. Vitamin B-12 is required for nerve and brain health, and for healthy red blood cells. It also works together with folate to maintain normal levels of homocysteine. Coenzyme supplementation reduces the body's need to synthesize the active forms of vitamin B-12 from the synthetic form, cyanocobalamin.

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Dietary Supplement Suitable for Vegetarians Advanced B-12 Complex™ combines the two active, coenzymated forms of B-12 - methylcobalamin and adenosylcobalamin (dibencozide) - with hydroxocobalamin, a form that is transported throughout the body in the bloodstream. Vitamin B-12 is required for nerve and brain health, and for healthy red blood cells. It also works together with folate to maintain normal levels of homocysteine. Coenzyme supplementation reduces the body's need to synthesize the active forms of vitamin B-12 from the synthetic form, cyanocobalamin.

Customer reviews

5.0
verified purchase
Sub B-12

I like that it has 2 active B-12's. Lozenge is smaller than Jarrow's so it has less sugar alcohol. Jarrow uses xylitol which is a little higher glycemic than sorbitol/mannitol. I am sensitive to all sugar in the morning. I would prefer stevia. This Source Naturals B-12 melted in about 10 minutes. It melts faster than Jarrow b-12 (20 min. melt approx). I prefer Jarrow's glass bottle and cap better over Source Naturals bottle caps/neck. I like screw caps/necks like Jarrow or Doctor's Best bottles. I use B-12 with Country Life coenzyme B complex. I also use Natural Factors B-12.

9/27/2008
5.0
verified purchase
Fantastic

I ordered this to go with an extra strength L-methyl folate supplement after doing extensive research into the MTHFR gene mutation and working to get tested for it. With its clean ingredients and pleasant taste, this B-13 Complex also has greatly improved my energy levels despite chronic insomnia and poor sleep while I await a sleep study appointment.

1/23/2024
5.0
verified purchase
one of the better b-12 supplements

bought 8 bottles over a period of time and it works really well! great effect on energy levels. it is slightly more expensive than other brands but it does work well

11/20/2024
5.0
verified purchase
Source Naturals

As stated: “Advanced B-12 Complex combines the two active, coenzymated forms of B-12 - methylcobalamin and adenosylcobalamin (dibencozide) - with hydroxocobalamin, a form that is transported throughout the body in the bloodstream. Vitamin B-12 is required for nerve and brain health, and for healthy red blood cells. It also works together with folate to maintain normal levels of homocysteine. Coenzyme supplementation reduces the body's need to synthesize the active forms of vitamin B-12 from the synthetic form, cyanocobalamin.”

12/12/2023
5.0
verified purchase
Excellent

I’ve been really happy with Source Naturals B12 Advanced Complex. The quality ingredients and combination of B12 with folic acid make this a solid choice for daily supplementation. The potency is impressive, and I like that the lozenges are easy to take. The taste is pleasant and not overly strong, which makes it easy to use consistently. I’ve also noticed a positive energy effect, especially on days when I feel a little sluggish. Overall, it’s a convenient, high-quality B12 supplement that I would recommend.

9/14/2026
3.0
verified purchase

absorption is tricky and these are lozenges not so practical but good enough.

9/4/2026
5.0
verified purchase
B-12

healthy right amount tasty lozenges benefits health packaged well organic quality

11/10/2025
5.0
verified purchase
Great supplement!

The composition and ingredients quality are excellent with positive results. It is really a great supplement.

9/13/2025
5.0
verified purchase
Good brand!

Haven’t taken yet but previous b12 from this brand tasted nice and the mix of b12 here should also be effective and taste great. 👍 if helpful 💛💚

7/21/2025
5.0
verified purchase
Effective and good taste

Source Naturals always gives good and reliable results. Their high quality ingredients makes them trustworthy and this is a good size package for the price.

6/3/2025