Key Ingredients & Forms

Source Naturals Advanced B-12 Complex delivers 5 mg (5000 mcg) of vitamin B12 per lozenge, using three distinct forms to provide comprehensive support. Each lozenge contains methylcobalamin – the active, coenzymated form essential for methylation and nervous system function; adenosylcobalamin (dibencozide) – the primary B12 form in mitochondria, supporting ATP production and cellular energy; and hydroxocobalamin – a natural, transportable form that contributes to nitric oxide regulation and toxin neutralization, serving as a precursor to the other active forms. This combination ensures a broad spectrum of B12 activity.

Benefits of B12 Complex

Vitamin B12 plays a role in energy metabolism, helping convert food into usable energy. It also supports healthy nervous system function, red blood cell formation, and DNA synthesis. By providing three active forms, this complex supports methylation processes (methylcobalamin), mitochondrial energy production (adenosylcobalamin), and cellular transport and detoxification pathways (hydroxocobalamin). Together, they help maintain steady energy levels and cognitive function. Consult a healthcare practitioner if you are unsure about your B12 needs.

How to Choose the Right B12 Supplement

When selecting a B12 supplement, consider the form and dosage. Cyanocobalamin, a synthetic form, requires conversion to active forms and may be less efficient for individuals with methylation issues. Active forms like methylcobalamin and adenosylcobalamin are preferred for optimal bioavailability. This formula also contains hydroxocobalamin, which has a longer half-life in the bloodstream. The lozenge format bypasses digestive absorption issues, making it ideal for vegetarians, vegans, and older adults. Allergen-conscious users will appreciate that it contains No yeast, dairy, egg, gluten, soy, or wheat, and No artificial additives.

How to Take This Lozenge

For best results, allow one lozenge to dissolve slowly in your mouth, preferably on an empty stomach. Sublingual absorption delivers B12 directly into the bloodstream, bypassing the digestive tract. This method is especially beneficial for those with low stomach acid or gastrointestinal conditions that impair absorption. Consistency matters—take daily for steady support.

Side Effects and Interactions

Vitamin B12 is generally well-tolerated, even at high doses. Some individuals may experience mild nausea, headache, or dizziness. B12 can interact with certain medications, including metformin, proton pump inhibitors, and some antibiotics. If you have a medical condition or are taking prescription drugs, consult your healthcare provider before starting supplementation.

FAQ

What is the difference between methylcobalamin and cyanocobalamin?

Methylcobalamin is an active, coenzymated form that the body can use immediately, while cyanocobalamin is synthetic and requires conversion in the liver. Active forms are generally preferred for individuals with MTHFR gene variants or absorption issues.

Can I take this on an empty stomach?

Yes, this lozenge is designed for sublingual absorption and can be taken without food. In fact, taking it on an empty stomach may enhance absorption.

Is this suitable for vegans?

Yes, Source Naturals Advanced B-12 Complex is suitable for vegetarians and vegans. B12 in this product is derived from fermentation, not animal sources.

Why does this B12 contain three different forms?

Each form serves a unique biological role. Methylcobalamin supports methylation, adenosylcobalamin fuels cellular energy, and hydroxocobalamin aids transport and detoxification. Combining them ensures comprehensive B12 activity.

Health Canada: This product is a Natural Health Product. Always read the label and follow directions for use. Consult a healthcare practitioner prior to use if you are taking medication or have a medical condition.