There is no study to confirm that comfrey has anti-estrogenic pharmacological effects, this product is a Chinese herbal medicine, mainly has the effect of clearing heat and cooling the blood, activating blood circulation and detoxification.
Comfrey is the dried root of Xinjiang comfrey or Inner Mongolia comfrey of comfrey family, cold in nature, sweet and salty in taste, belonging to heart and liver meridian. It has the efficacy of clearing heat and cooling blood, activating blood circulation and detoxification, penetrating rash and eliminating spots. It is used for the treatment of blood-heat and toxicity, purple and black spots, impenetrable measles, sores, eczema, water and fire burns.
Adverse reactions and contraindications of comfrey are not clear; note that people with weak stomach and intestines and slippery stools should take with caution.
Comfrey can be decocted, or used externally in appropriate quantities, boiled paste or soaked in vegetable oil and rubbed.
From the efficacy of comfrey, this product has no anti-estrogenic effect.
Drugs should be used under the guidance of a doctor, do not self-medication, to avoid causing adverse consequences.