This site names its delivery method specifically and directly: sublingual spray — worth understanding what that term means on its own.
This site describes it directly as application under the tongue, chosen for quick, simple daily use without capsules or powders — worth reading "sublingual" as a specific administration route, not just a general spray format.
This site separately lists "prefer a simple daily spray over pills or powders" among its stated reasonable-fit points — worth reading the format choice and that fit-point together.
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