What Chinese patent medicines are specifically used to treat low-grade fever?
Chinese patent medicines specifically used for treating low-grade fever generally include Xiao Chai Hu Granules, Sang Ju Cold Tablets, Yin Qiao Jie Du Pills, Ling Yang Jiao Granules, and Lian Hua Qing Wen Capsules. Detailed analysis is as follows:

1. Xiao Chai Hu Granules: The main ingredients include Bupleurum, Scutellaria, Pinellia, etc., which have the effects of relieving exterior symptoms, clearing heat, soothing the liver, and harmonizing the stomach. They are suitable for low-grade fever caused by exogenous diseases, accompanied by alternating chills and fever, distension in the chest and hypochondrium, poor appetite, and other symptoms. These granules help regulate internal and external imbalances and alleviate discomfort from low-grade fever.
2. Sang Ju Cold Tablets: Composed of mulberry leaf, chrysanthemum, forsythia, and other ingredients, these tablets have the function of dispersing wind, clearing heat, promoting lung function, and relieving cough. They are effective for low-grade fever caused by wind-heat感冒, especially when accompanied by cough, sore throat, and headache. They help eliminate pathogenic wind-heat and reduce body temperature.
3. Yin Qiao Jie Du Pills: Containing honeysuckle, forsythia, mint, and other components, these pills excel at dispersing wind and exterior pathogens, clearing heat, and detoxifying. They are suitable for low-grade fever due to wind-heat感冒, especially when associated with dry mouth, sore throat, nasal congestion, and yellow nasal discharge. They effectively disperse wind-heat and relieve fever and toxicity.
4. Ling Yang Jiao Granules: The primary ingredient is antelope horn, which has functions of calming the liver and suppressing wind, clearing liver fire, improving vision, and clearing heat to detoxify. These granules are indicated for low-grade fever caused by excessive internal heat or hyperactivity of liver yang, particularly suitable for cases accompanied by restlessness, dizziness, and blurred vision. They provide a mild yet long-lasting antipyretic effect.
5. Lian Hua Qing Wen Capsules: Made from forsythia, honeysuckle, processed Ephedra, and other ingredients, these capsules have the effect of clearing epidemic toxins, detoxifying, promoting lung function, and releasing heat. They are suitable for low-grade fever caused by influenza characterized as heat-toxin attacking the lungs, especially when accompanied by muscle aches, cough, and fatigue. They help eliminate heat-toxins and relieve low-grade fever.
When using Chinese patent medicines for low-grade fever, it's essential to first identify the underlying cause through pattern differentiation to avoid blind medication use. Always follow the instructions or medical advice strictly regarding dosage and duration of treatment.