It is generally not recommended to take saffron for a long period of time, as it has a strong blood activating effect and may affect menstruation if taken for a long period of time. Saffron is sweet in taste and flat in nature; it belongs to the heart and liver meridians and has the effects of activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), cooling the blood and removing toxins (referring to the treatment of blood-heat and toxins), and relieving depression and tranquilizing the mind. It is used for treating menstrual obstruction and impediment in the abdomen, postpartum stagnation, warm-heat poisonous spots (warm-heat poisonous evils invading the body resulting in spots and plaques on the skin), depression and congestion, and palpitation and frenzy. Saffron has a strong blood activating effect and is able to pass menstruation, so pregnant women should be cautious in using it. Patients must strictly follow the doctor’s instructions to use saffron, do not self-medication or increase the dosage, so as not to delay the condition.