San Huang Tablets need to be taken after meals. San Huang Tablets are mainly a Chinese medicine that clears heat and removes fire. In case of facial boils and boils all over the body, you can take San Huang tablets orally to assist in the treatment of boils and abscesses. However, San Huang Tablets contain rhubarb, which is a stimulant to the gastrointestinal tract and is recommended to be taken after meals. If taken on an empty stomach, it can irritate the gastrointestinal mucosa, causing stomach discomfort and even triggering the onset of acute gastritis, so San Huang tablets should always be taken after meals.