This site states the format directly: a liquid dropper in a 1 fl oz / 30 mL bottle, mixed into water.
A dropper means you measure each serving yourself rather than swallowing a pre-filled capsule. This site describes the routine as a few drops mixed into water, with the serving size taken from your bottle's label.
The 30 mL bottle is the unit behind every package on this site, and the site's own routine describes one dropper daily. Check your bottle's label for the exact serving and how many servings it holds.