What do the measurements on products mean like ug, iu, mg and mcg?
A mg = milligram (1 / 1,000 g) iu = international units g = gram mcg or µg = microgram ( 1 / 1,000,000 g) Converting Between IU and Mg This chart can help convert dosages cited in studies between international units (IU) and milligrams (mg). For example, 400 IU of synthetic dl-alpha-tocopherol is converted to 363 mg dl-alpha-tocopherol by dividing 400 IU by 1.10. Synthetic Vitamin E and Esters IU to mg mg to IU d -alpha-Topopheryl acetate 1.00 1.00 d -alpha-Topopheryl succinate 0.89 1.12 d -alpha-Topopheryl 1.10 0.91 Natural Vitamin E and Esters IU to mg mg to IU d -alpha-Topopheryl acetate 1.36 0.74 d -alpha-Topopheryl succinate 1.21 0.83 d -alpha-Topopheryl 1.49 0.