Allium cepa has the efficacy of promoting Yang and dispersing knots (warming Yang qi and dissipating stagnation), and promoting the flow of Qi and stagnation. Allium cepa is a traditional Chinese medicine, is the dried bulb of Allium cepa, a plant of the genus Allium, family Liliaceae, with a pungent and bitter taste, warm nature, has the efficacy of dispersing yang and dissipating knots, moving qi and inducing stagnation, and is mainly used for the treatment of chest paralysis (stuffy pain in the chest), heart pain, epigastric (abdominal) plumping (bloated and uncomfortable in the stomach), bloating and pain, and diarrhea and dysentery (uncomfortable in the lower abdomen, wanting very much to relieve the bowels, and a feeling of incomplete bowel movement after the bowel movement). The adverse effects of this product are currently unknown. Note that this product is prohibited for those who are allergic to this product, allergic persons should be cautious, those with qi deficiency should be cautious, those without stagnation should not be used, those with weak stomach and dullness (no appetite, reduced food intake) and those who are intolerant of garlic flavor should not be taken. This product is irritating to the gastric mucous membrane when taken for a long time, and is prone to yelping, so care should be taken when using it. If you need to use this product, you should be under the guidance of a physician, do not blindly use your own medication, so as not to cause adverse reactions.