Compositions of amorphous calcium carbonate for inhalation, sublingual or buccal administration

A kit for preparation of a suspension composition including amorphous calcium carbonate (ACC) as an active agent stabilized by at least one stabilizer, the kit comprising:

• (i) vessel A including a solution of a soluble calcium salt in sterile water;
• (ii) vessel B including a solution of a soluble carbonate in sterile water;
• and
• (iii) instructions for preparation of the composition,
• wherein the resulted composition includes from 0.5 to 6.0 wt % of ACC, wherein the resulted ACC suspension composition is for at least one administration mode selected from the group consisting of inhalation administration, buccal administration, sublingual administration, and gingival administration, and wherein:
• (a) vessel B further includes at least one stabilizer;
• (b) the kit further includes one or two additional vessels each including at least one stabilizer;
• or
• (c) both (a) and (b).