Why 85% of Your Multivitamin Never Reaches Your Bloodstream (And What Sublingual Delivery Fixes)

Swallow a multivitamin tablet and it has a long road ahead: stomach acid, digestive enzymes, gut wall absorption, then a first pass through the liver before anything reaches general circulation. Each step can degrade or filter out active ingredients. This is called first-pass metabolism, and it's a well-documented reason many oral supplements deliver less of their labeled dose into your bloodstream than the label implies.

[PLACEHOLDER: cite the specific bioavailability studies/percentages you want to use here — the "85%" figure in this article's title is illustrative and needs a real source before publishing, or should be softened to general language.]

What sublingual delivery changes

Placing a strip under the tongue lets certain actives absorb directly through the capillary-rich tissue of the mouth, entering the bloodstream without first passing through the stomach and liver. This route can support faster and more consistent delivery for some nutrients, particularly water-soluble ones like B vitamins.

What this doesn't mean

Sublingual delivery is not a treatment for any medical condition, and individual absorption varies by nutrient, dose, and person. Fat-soluble vitamins like D3 still rely on some digestive cofactors for full utilisation. This article explains a delivery mechanism, not a cure or guaranteed outcome.

This content is for general information and is not medical advice. Consult a healthcare professional for guidance specific to you.