What the packet says
What is it?
What's it made of?
Maize starch, povidone K30, stearic acid, all-rac-alpha-tocopherol, silica, colloidal anydrous, hypromellose, macrogol 400, talc, titanium dioxide
How it works
The Progesterone only pill (POP) / mini pill (Nacrez) is a small tablet you swallow daily that (unlike the combined pill) only contains one hormone – progesterone. It prevents pregnancy by making the fluid in your cervix thicker (which makes it more difficult for sperm to enter the womb), and preventing the lining of your womb thickening enough for an embryo to grow in it. The progestogen only pills with desogestrel in them (so all of them except Micronor, Noriday and Norgeston) can also stop ovulation.