BioClinic Naturals Opti B12 5000mcg — High-Dose Sublingual Bioactive B12

Opti B12 5000mcg is a high-dose sublingual vitamin B12 in a bioactive form, formulated to support energy metabolism, red blood cell production and nervous-system health — designed to be absorbed even where the usual gut absorption route is impaired.

Per tablet: co-methylcobalamin 5000mcg · sublingual · vegan · practitioner-grade.

What is Opti B12 5000?

It is a fast-acting, high-strength B12 supplement delivered as a sublingual tablet that dissolves under the tongue. It uses co-methylcobalamin — a bioactive form of B12 — rather than the synthetic cyanocobalamin found in many supplements.

How it works — bypassing the absorption bottleneck

Vitamin B12 is required for red blood cell production, energy and nutrient metabolism, and nervous-system function. Its absorption from the gut is uniquely complicated: it depends on a carrier protein called intrinsic factor, and that pathway is easily impaired — by age, low stomach acid, certain medications, and gastrointestinal conditions. A 5000mcg sublingual dose addresses this directly: dissolved under the tongue, B12 is absorbed through the oral mucosa into the bloodstream, bypassing the intrinsic-factor route entirely. The co-methylcobalamin form is also retained better than cyanocobalamin, with less lost to urinary excretion.

Who it may suit

People with reduced B12 absorption (older adults, those with low stomach acid or on acid-suppressing or metformin medication), and vegans and vegetarians, who are at elevated risk of dietary B12 inadequacy.

How to take it

One tablet dissolved under the tongue daily, or as directed by your practitioner.

Indicated for

Maintenance of vitamin B12 status; support of energy and nutrient metabolism and red blood cell production; relief of tiredness and fatigue; and support of vegan and vegetarian diets.

Composition

Co-methylcobalamin (vitamin B12) 5000mcg per sublingual tablet. Vegan. 60 tablets.

Practitioner-grade. Always read the label and follow the directions for use. If symptoms persist, consult your healthcare professional.