The page positions a spray as an alternative to swallowing a pill, with a fast-acting spray base.
Four pumps, about 0.60 mL, sprayed into the mouth or onto the tongue once daily, no water needed. For people who dislike pills, that is a real convenience difference.
Fast-acting describes the delivery base, not a promised speed of results. The guarantee wording itself asks for at least 30 days of consistent use, which is the page's own signal that this is a routine product.