Adeno B12/B-12 is a vitamin B12 supplement that supports energy production and mitochondrial health, helping you stay active even on demanding days. Seeking Health relies on GMP manufacturing and allergen controls, so you can trust the quality of these vegan, methyl-free B12 lozenges. Each lozenge dissolves quickly for fast absorption.

Available Sizes & Variants:

60 Lozenges – convenient daily dose for ongoing B12 support

Benefits & Features:

• Energy support to power you through busy days and keep you alert.
• Adenosylcobalamin is the star ingredient that supports mitochondrial energy production for efficient metabolism.
• Sublingual delivery helps absorption.
• Vegan and allergen friendly, with strict controls and GMP manufacturing.
• Sublingual delivery helps fast absorption, and the 3,000 microgram dose fits with guidance for restoring B12 status, helping energy mood and neurological function in those with absorption issues.

Unique Content:

Seeking Health's Adeno B12/B-12 line uses a methyl-free adenosylcobalamin - the mitochondrial coenzyme form of B12 to support energy pathways. The lozenges are manufactured in GMP-certified facilities and are vegan, vegetarian, and free from common allergens, reflecting the brand's commitment to transparency and allergen control in these vitamin b12 supplements. Quality you can feel. This potent, fast absorbing formula helps you tackle daily demands with confidence, and for those balancing nutrients, you might also consider a vitamin d supplement to round out support.

Vitamin B12, xylitol, ascorbyl palmitate, silica, natural cherry flavor

• GTIN: 810007520100
• Manufacturer: Seeking Health
• Categories: In stockNew ArrivalsPopular Supplement BrandsSeeking HealthVitamin B12 (Cobalamin) Supplements & Tablets
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one lozenge daily with food, or follow your healthcare professional's instructions. If a lower dosage is preferred, you can break the lozenge into smaller pieces. Avoid taking it within 5 hours of bedtime to prevent potential sleep disturbances. As a dietary supplement\, take 3 tablets daily\, preferably with food. Consider taking this product in combination with NOW Immune Renew\, Super Antioxidants and Alpha Lipoic Acid.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Vitamin B12 (Adenosylcobalamin)

Vitamin B12, in the form of adenosylcobalamin, is a water-soluble nutrient essential for energy generation and normal nervous system function.

This mitochondrial coenzyme form is used directly in energy pathways and is offered as a vegan, methyl-free option produced under GMP standards, with allergen controls in place.

What Does Vitamin B12 Do?

Vitamin B12 helps support energy generation and metabolism, contributes to cognitive health, and assists with the proper conversion of homocysteine in the body.

In its adenosylcobalamin form, this nutrient plays a key role in mitochondrial energy processes and normal metabolic function, aligning with EFSA and NHS interpretations of B12 activity.

This supplement isn't intended to diagnose, treat, cure, or prevent any disease.

Seeking Health is our chosen partner for Adeno B12 because this brand brings a solid commitment to manufacturing excellence and allergen control that lines up with Welzo’s safety standards. The manufacturer reports GMP-compliant production, a globally recognised benchmark for quality, which underpins the reliability of their vegan, vegetarian lozenges and allergen-free formulation. This combination of rigorous process controls and transparency about excipients supports trust in daily use and product safety.

In terms of brand credibility, Seeking Health is recognised for its solid manufacturing quality and standardised quality practices. Their methyl-free adenosylcobalamin 3,000 mcg per lozenge is paired with a sublingual delivery method that helps rapid absorption, a detail in line with scientifically informed formulation choices. This brand stands out from competitors with its clear focus on purity, energy-related metabolic support, and mitochondrial health pathways, reinforced by their allergen controls.

Welzo checked this brand with our team of medical experts and our really rigorous testing protocols to ensure product integrity and safety. This partnership fits our criteria for trusted sourcing, and we’re confident in giving UK customers a well‑supported, quality B12 option from Seeking Health. our team of medical experts and our rigorous testing protocols.