Definitions for "Norethisterone"
(NET) A progestogen of a type weakly related to the male hormone testosterone. Progestogens of this class are commonly found in the oral contraceptive pill. Norethisterone acetate is marketed as Primolut N and is made by Schering. Called norethindrone in the US.
A synthetic progesterone which "programmes" the cycle, enabling the first day of the period to be controlled. There is some evidence that the treatment itself is more successful when Norethisterone is used.
Norethisterone (or norethindrone) is a molecule used in hormonal contraceptives. Norethisterone is a synthetic form, and therefore agonist, of the naturally occurring female sex hormone, progesterone. It is a member of the progestagen family and can be used to treat premenstrual syndrome, painful periods, abnormal heavy bleeding, irregular periods, menopausal syndrome (in combination with oestrogen), or to postpone a period.