B12 Adenosylcobalamin 3,000mcg, 60 Lozenges
60 Lozenges
May be a fit for
- Adults seeking adenosylcobalamin, the mitochondria-active B12 coenzyme form
- Practitioners protocols requiring high-dose 3,000mcg B12 lozenge delivery
- Individuals supporting cellular energy metabolism with coenzyme B12
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Allergy Research Group's B12 Adenosylcobalamin delivers 3,000mcg of adenosylcobalamin, the mitochondria-active coenzyme form of vitamin B12, in a sublingual lozenge designed for direct mucosal absorption. Unlike cyanocobalamin, adenosylcobalamin is a bioidentical coenzyme the body utilizes without requiring conversion, supporting cellular energy metabolism, neurological function, and red blood cell formation. Well-suited for individuals with absorption concerns or those seeking an alternative B12 coenzyme form.
Why It's Worth Considering: Allergy Research Group is a practitioner-recognized brand, and the sublingual lozenge format bypasses GI absorption barriers, making it a practical option for those with compromised digestive uptake.
Allergy Research Group · 60 LozengesMake it part of your routine.
As a dietary supplement, adults place 1 lozenge daily under the tongue 30 seconds before swallowing, or as directed by a healthcare professional.
Important cautions & interactions
Product details
Supplement facts & complete label
Serving Size:
1 Lozenge
Amount Per Serving:
Folate (as 200 mcg Folic Acid) ... 333 mcgDFE
Vitamin B12 (as Adenosylcobalamin) ... 3000 mcg
Other Ingredients:
Sorbitol, stearic acid, cellulose, silica, magnesium stearate, croscarmellose sodium.
Label directions
As a dietary supplement, adults place 1 lozenge daily under the tongue 30 seconds before swallowing, or as directed by a healthcare professional.
Label cautions
Keep in a cool, dry place, tightly capped.
Source: authorized supplier original manufacturer label · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Who it may suit
May be a fit for
- Adults seeking adenosylcobalamin, the mitochondria-active B12 coenzyme form
- Practitioners protocols requiring high-dose 3,000mcg B12 lozenge delivery
- Individuals supporting cellular energy metabolism with coenzyme B12
- Those who may have difficulty absorbing B12 via oral tablet formats
Considerations
- High-dose niacin with liver conditions (monitor liver enzymes)
- B6 above 100mg/day long-term (risk of peripheral neuropathy)
- Active cancer treatment (some B vitamins may interfere — consult oncologist)
Compatibility & interactions
Works Well With
Ask Gabriel for personalized stacking recommendations.
Take Separately From
No significant interactions identified. Always consult your healthcare provider.
What to expect over time
Energy Boost
Noticeable improvement in energy levels
Mood & Stress
Reduced stress perception, better coping
Neurological
Improved cognitive clarity and focus
Homocysteine
Measurable homocysteine reduction (cardiovascular marker)
Based on B-complex supplementation research. Water-soluble — yellow urine color is normal and harmless.
Compare the options
Compare B-Vitamin Forms
Methylated vs Standard vs Synthetic
| Feature | Methylated (active) | Standard | Synthetic (cheap) |
|---|---|---|---|
| B12 Form | Methylcobalamin | Hydroxocobalamin | Cyanocobalamin |
| Folate Form | 5-MTHF (methylfolate) | Folinic acid | Folic acid (synthetic) |
| B6 Form | P-5-P (pyridoxal-5-phosphate) | Pyridoxal | Pyridoxine HCl |
| Best For | MTHFR variants, optimal absorption | General use | Budget (requires conversion) |
| MTHFR Safe | Yes — bypasses mutation | Mostly yes | No — cannot be converted by 40% of population |
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A few useful answers.
Research & further reading
More category questions
What does methylated mean and why does it matter?
Methylated B vitamins are in their active, bioavailable form — your body can use them immediately without conversion. About 40% of the population has MTHFR gene variants that impair conversion of synthetic folic acid to active folate. Methylated forms (methylcobalamin, methylfolate, P-5-P) bypass this issue entirely.
Why does my urine turn bright yellow after taking B vitamins?
This is completely normal and harmless. Riboflavin (B2) is a bright yellow fluorescent compound. When you take more than your body needs, the excess is excreted in urine, causing the distinctive color. It's actually a sign your body absorbed the B vitamins and is eliminating what it doesn't need.
Can I take B-complex in the evening?
B vitamins support energy production, so morning dosing is generally recommended. Some people find evening B-complex disrupts sleep due to increased energy. However, B6 and B12 are involved in melatonin production, so individual responses vary. If evening dosing doesn't affect your sleep, it's fine.
How do I know if I need B12 specifically?
Signs of B12 deficiency: fatigue, brain fog, tingling/numbness in extremities, balance issues, mood changes, and pale skin. At-risk groups: vegetarians/vegans (B12 is only in animal foods), adults over 50 (reduced absorption), and those taking metformin or PPIs (which deplete B12). A serum B12 test plus methylmalonic acid (more sensitive) can confirm.
Is it safe to take B vitamins every day?
Yes — B vitamins are water-soluble, meaning excess is excreted daily. No accumulation risk at standard supplement doses. The exception is B6 (pyridoxine): chronic doses above 100mg/day can cause peripheral neuropathy (nerve damage). The P-5-P form is safer at higher doses than pyridoxine HCl.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.