There is no difference between the efficacy and main treatment of fried and non-fried white mustard seeds, but fried white mustard seeds have reduced the nature of dispersal.
White mustard is pungent in flavor and warm in nature, belonging to the lung and stomach meridians, while frying can moderate the pungent and dispersing nature to avoid depletion of qi and injury to yin.
It has the efficacy of warming the lungs, resolving phlegm, inducing qi, dispersing knots and eliminating swelling, and can be used to treat cold phlegm and cough, chest and hypochondrium (chest and ribs) distension, phlegm stagnation of meridians and channels, numbness of joints, pain, phlegm-dampness effusion (multiple abscesses occurring deep in the muscles), and yin gangrene (a category of slow-acting yin sores and ulcers) swelling and toxins.
It should be noted that it should be used with caution for those who are not suffering from stubborn illnesses, those who are strong in body and evil; those who are deficient in qi and yin and those who have bleeding tendency should not use it; those who have skin allergy and broken should not use it externally.
If you need to take white mustard seeds to cure or regulate the body, it is recommended to take under the guidance of a doctor to avoid the risk of medication.