Carbamazepine, a medicine for epilepsy, can weaken the effect of Dienogest + Estradiol Valerate. The same is true for medicines for TB, such as rifampicin and rifabutin, and for some HIV medicines.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.