Formulation:

Green coffee extract, often approximately 30% to 60% chlorogenic acid,^[1] is usually taken in capsules or as a powder mixed into boiling water.^[2][1]

Range of dosages studied:

Green coffee extract has been given at dosages of 46 mg to 6,000 mg per day (14 mg to 1200 mg of chlorogenic acid) for 1 to 12 weeks.^{[3][2][4][5][6][7][1][8][9][10][11]}