Our probiotic drops contain non-GMO corn oil.  Corn oil has a mild light taste and is light yellow in color.  The microencapsulated probiotic will appear as whitish clumps or sand-like grains suspended in the corn oil.  These will settle out on standing.  In some cases the microencapsulated beads will form a “plug” in the neck of the bottle that is obvious at opening.  This is not abnormal and can be handled by using the dropper to resuspend the beadlets and shake well before administering.