It is best to start using Marvelon pills on the first day of the menstrual cycle, i.e. on the first day of bleeding. In this case, protection against unwanted pregnancy becomes active immediately, and there is no need to use additional contraception. Similarly to other hormonal pills, Marvelon pills should be taken for 21 days of the cycle, after which it is necessary to have a seven-day break, which in no way reduces the level of protection, and its sole purpose is to cleanse the body of the accumulated hormones.
During the seven-day break, there may occur withdrawal symptoms in the form of bleeding. This, however, does not constitute typical menstrual bleeding, as Marvelon prevents ovulation.