Noriday is a mini-pill (or progesterone-only pill). It's an oral contraceptive, it contains Norethisterone a synthetic progesterone, like the one produced by your body.
Some treatments contain the same active ingredient but are sold under different names. If the active ingredient and the dosage are the same, the treatments will have the same effect and work in the same way.
|Same active ingredient|
|Works in the same way|
|Often less expensive|