Do Prokit and grapefruit affect the effectiveness of Microgynon 21 during a 7-day break?

If I use Microgynon 21 and am now on a 7-day break or can I take Prokit during the break? Prokit impairs the absorption of tablets, but if I do not take them then theoretically there should be no problem, right? The same food, for example, grapefruit during the break from taking tablets. The doctor assigned me these pills when I asked if I could use them when taking birth control pills he said that there is no problem, but after checking the internet the problem is probably.