What causes bleeding while taking Yaz?

Yasmin is a commonly used short-term hormonal contraceptive. If bleeding occurs during treatment, consider whether it was caused by missed doses—a common side effect of the medication—so there’s no need for excessive concern. Yasmin contains specific amounts of estrogen and progestin, which can affect the user’s normal endocrine balance and lead to irregular shedding of the endometrium, potentially resulting in light, irregular vaginal bleeding during treatment.