Suggested use: To use Liquid Zinc Ultra as a supplement, take 1 teaspoon in water or juice daily or as directed by a health professional. Shake gently before use.To use as a zinc test hold 1 teaspoon in the mouth for 15 seconds. If an immediate perception of taste occurs, the person may have an adequate zinc status. If a lack of taste or delay in taste perception occurs, it may indicate a zinc deficiency. Liquid Zinc Ultra may be swallowed after testing.