Marie Curie is remembered for her discovery of radium and polonium, and her huge contribution to the fight against cancer. Born Maria Sklodowska on 7 November 1867 in Warsaw, Poland, she was the youngest of five children of poor school teachers.
Medical Definition of b.i.d. (on prescription) b.i.d. (on prescription): Seen on a prescription, b.i.d. means twice (two times) a day. It is an abbreviation for bis in die which in Latin means twice a day. The abbreviation b.i.d. is sometimes written without a period either in lower-case letters as bid or in capital letters as BID.
Typically, the prescription form is Vitamin D2, also known as ergocalciferol. The over-the-counter Vitamin D is usually Vitamin D3, also referred to as cholecalciferol. Prescription strength Vitamin D usually comes in 50,000 units. The over-the-counter Vitamin D usually comes in doses of 400 - 1000 units.: The vitamin D that is prescription and is 50,000 IU is vitamin D2 (ergocalciferol). The over-the-counter vitamin D is vitamin D3 (cholecalciferol). Each is absorbed differently by the body and therefore they have different bioequivalence.