Why is menstruation late after taking Eskayvie Reverse Capsule 340mg?

Why is menstruation late after taking Eskayvie Reverse Capsule 340mg?

• It is the effect of harmonizing and balancing estrogen hormones. 
• Take Eskayvie Reverse Capsule 340mg at the same time every day, according to your cycle and stop when your menstrual cycle is supposed to occur.