Can cold-natured fruits be consumed with traditional Chinese medicine?
Generally speaking, if a traditional Chinese medicine (TCM) has effects of clearing heat and purging fire, cooling fruits can be consumed together with the medicine. However, if the medicine has warming and nourishing properties, cooling fruits should not be taken with the medicine. The use of TCM should follow medical advice. Detailed explanation is as follows:

When taking TCM that has heat-clearing and fire-purging effects, cooling fruits can be consumed together. These types of TCM are commonly used to alleviate internal heat syndromes, such as dry mouth and throat, sore throat, and constipation. They have a cold or cool nature and can help eliminate heat pathogens from the body. Cooling fruits, such as pears, watermelons, and pomelos, also have heat-clearing and fluid-generating effects. When taken together with heat-clearing and fire-purging herbs, they will not conflict but rather assist in enhancing the medicinal effects, helping the body expel heat pathogens more effectively.
However, if you are taking warming and nourishing TCM, cooling fruits should not be consumed together. Warming and nourishing herbs are typically used to regulate conditions of cold deficiency in the body, such as cold hands and feet, pale complexion, shortness of breath, and fatigue. These herbs have a warm nature and function to replenish yang energy and nourish qi and blood to improve overall constitution. Cooling fruits, being cold in nature, may counteract the warming effects of these herbs. Consuming cooling fruits while taking warming and nourishing herbs is akin to pouring cold water onto a burning fire, which significantly weakens the warming and nourishing effects of the herbs and compromises the therapeutic outcome.
Even in cases where cooling fruits can be consumed together with TCM, it is important to control the quantity to avoid excessive intake that may cause cold damage to the spleen and stomach. During the period of taking warming and nourishing herbs, in addition to avoiding cooling fruits, one should also avoid cold beverages and icy foods that are cold in nature.