Regulation of opioid and opiate receptors

Alkaloids such as boldine, codeine, narceine and morphine are active factors in their receptors. Boldine has morphine-like properties and is active on opioid receptors. It may be used to treat stomach disorders and as metabolic stimulant. As it is similar to morphine, boldine can also be considered in the possible development of treatments for narcotic dependence. Codeine also binds to opiate receptors, and specifically functions to reduce bronchial secretions. Codeine can also be used as a cough suppressant when acting on the centre of the medulla oblongata and as a sedative agent. 

Morphine and narceine are active on / -opiate and K-receptors. They are also known as analgesic agents. These alkaloids may be used as pain relievers. Narceine is also known to be used in the treatment of a cough. 

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