If the Evra patch has been applied according to the procedure in the package leaflet (i.e. on the first day after the end of the 7-day break or the day after the end of the pack of tablets), I assume that you can start another pack of Microgynon on the same day without harming contraceptive effectiveness. Probably, no study has been conducted on the effect of a patch applied for an hour on the mechanism of action of the tablets. If there is a delay during the change of contraceptive method, additional protection should be used during intercourse for the next 7 days.

In case of any doubts, I encourage you to use the teleconsultation with a gynaecologist - the service is available on our website in the e-visit tab:

https://www.gdziepolek.pl/telekonsultacja/z-ginekologiem

I encourage you to read:

https://www.gdziepolek.pl/artykuly/jak-prawidlowo-stosowac-antykoncepcje