Pain medicine: why blocking dopamine receptors alleviates morphine tolerance By blocking dopamine receptors located in the spinal cord. a compound found in a traditional Chinese herbal medicine may help mitigate tolerance to morphine. a common problem among cancer patients who regularly take the opioid painkiller. A team led by Ji-Hua Liu and Bo-Yang Yu from China Pharmaceutical Unive... https://herbsdailyes.shop/product-category/dong-quai-angelica/