The bioavailability of active ingredients is higher if absorbed thru the mouth cavity than if swallowed.

A large proportion of the active ingredients that are introduced as food supplements (that is, bypassing their natural environment as concentrates or extracts) are destroyed on the way through the digestive system. The liver destroys everything it thinks is coming into the body in too high a dose.

What percentage of the active ingredient in a food supplement or medicine gets into the bloodstream depends very much on the individual.

It is generally estimated that about 20 to 30% effectively reaches the bloodstream. Pharmacy solves this by giving very high doses of everything in tablets, for example, but in terms of something it will already enter the blood.

They are consciously knowing that the liver is stressed with long-term use.

When solving this problem, to deliver the most accurate doses possible, they use 2 methods (there are a few more methods, but they are not interesting to our concept):

-one is an injection, which does not come into play in the case of nutritional supplements (although we already know commercial providers of so-called vitamin infusions, i.e. here, too, "type the market", i.e. looking for market niches and audiences)

and others:

-⁠sublingual (under the tongue) application.

Absorption through the oral cavity is largely directly into the bloodstream, so the dosage is more accurate.

Of course, not everything is absorbed directly, some are also swallowed with saliva, but research shows that everything is faster and more effective than if the same dose is swallowed.