Liquid, sublingual supplements are marketed as absorbing faster than capsules. Here's what's actually behind that claim, and what it doesn't tell you.
Compounds absorbed under the tongue can enter the bloodstream through the mucous membranes there, potentially bypassing some of the digestive breakdown a swallowed capsule requires.
The strength of this effect varies significantly by compound, and manufacturer claims about a specific product's absorption advantage often aren't independently verified.
Format alone doesn't guarantee effectiveness. A well-dosed capsule can still outperform a poorly-dosed liquid. Absorption speed is one factor among several, not a guarantee of results.