Adverse effects of taking Chinese medicine fish bladder is not clear, has not yet been reported to take will cause body itching, so generally does not cause body itching. The source of swim bladder in Chinese medicine is the swim bladder of the fish, also known as fish maw, which is sweet, salty and warm in nature, and has the effect of filling essence, tonifying blood and stopping bleeding, which can be used in the treatment of kidney deficiency, vomiting of blood and blood avalanches. It can be used in the treatment of kidney deficiency, spitting blood, blood avalanches, etc. It is mostly used in pills, such as swim bladder pills, and should be used under the guidance of a physician for the treatment of the above mentioned diseases. If itching occurs after taking this product, it is recommended to consult a doctor according to your specific situation.