Advanced B-12 Complex is a sublingual lozenge that delivers three bioactive B-12 forms to support energy levels and nervous system health. The lozenges use a trio of coenzymated forms for rapid uptake. It bypasses gut conversion, delivering active B-12 directly as methylcobalamin, adenosylcobalamin and hydroxocobalamin. Plus, it comes in a cherry flavoured vegetarian formula.

Available Sizes & Variants:

60 Lozenges - convenient daily dose

Benefits & Features:

• Three bioactive B-12 forms enable quick uptake.
• Sublingual delivery bypasses gut conversion, enabling fast, efficient absorption into the bloodstream.
• Cherry flavoured vegetarian formula delivers a pleasant daily dose without common allergens.
• Energy support and nervous system health are enhanced by three coenzymated B-12 forms working together, helping you stay focused on busy days, with steadier mood and improved daily resilience.
• Bypassing conversion may help those with absorption or methylation challenges.

Source Naturals has built a reputation for science-forward formulas, and Advanced B-12 Complex fits that approach. The three coenzymated B-12 forms work in harmony with established biochemistry, while sublingual delivery accelerates absorption. Cherry flavour and a vegetarian formula keep the experience friendly and allergen-aware, with gluten, dairy, soy and artificial additives kept out. This practical, high potency option sits firmly in the vitamin b12 supplements category for anyone seeking reliable B-12 support and the benefits of b 12 in daily life.

Folate (as folic acid), Vitamin B-12 (as methylcobalamin, hydroxocobalamin, and adenosylcobalamin), Sorbitol, mannitol, natural cherry flavour, stearic acid, and magnesium stearate

• GTIN: 21078014812
• Manufacturer: Source Naturals
• Categories: New ArrivalsSource NaturalsVitamin 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. For best results, let it dissolve in your mouth before swallowing. Take 3 times daily according to weight or as directed by your healthcare practitioner.  Shake well before using.

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

The Active Ingredient Is: Vitamin B-12 (Cobalamin)

Vitamin B-12 is a water-soluble vitamin essential for DNA synthesis and the formation of red blood cells, and for normal neurological function.

This formula includes three coenzyme forms of B-12, including methylcobalamin, adenosylcobalamin and hydroxocobalamin, aimed at fast availability when taken sublingually.

What Does Vitamin B-12 Do?

Vitamin B-12 helps with normal energy metabolism and supports the healthy function of the nervous system and blood formation. It supports DNA synthesis and methylation processes as part of everyday physiology.

This combination uses three bioactive forms to support regular metabolic processes at the cellular level and overall vitality.

This product isn't meant to diagnose, treat, cure, or prevent any disease.

Why Source Naturals Advanced B-12 Complex is Welzo Selected

Source Naturals has earned a spot in our portfolio for its thoughtful formulation of B-12 as three coenzymated forms delivered under the tongue, designed to bypass digestive conversion and support quick bioavailability. The product combines methylcobalamin, hydroxocobalamin and adenosylcobalamin with folate in a cherry‑flavoured, vegetarian lozenge, aligning with our commitment to accessible, well‑rounded nutrition. This blend exemplifies Source Naturals’ focus on high‑quality, targeted B‑vitamin delivery within a convenient format, making it a compelling choice for Welzo customers seeking a robust B‑12 option. Our medical team reviews such formulations to ensure alignment with our standards for quality and safety, and you can see our process outlined on our team page. This brand’s approach to multi‑form B‑12 is supported by our internal evaluation of ingredient quality and purity standards, which guides our partnership decisions. our medical team and our ingredient quality and purity standards.