American food supplement manufacturers are claiming that vitamin sprays are more effective in ensuring their contents are absorbed by the body than traditional vitamin pills.

Robert Thistle, chief executive of Micro Laboratories Inc., told the Los Angeles Times that a few spritzes in the mouth per day are absorbed by tissues beneath the tongue or lining of the cheeks, whereas conventional vitamins must dissolve in the stomach first then into the small intestines and in some cases are not absorbed at all.

However, the National Nutritional Foods Association argues people who take pills are getting adequate amounts of vitamins and that “it’s unclear how well the mouth’s delicate mucosal tissues transport vitamins to the bloodstream.”