Definition

The hydrochloride salt form of histamine, with potential immunomodulatory and antineoplastic activities. Upon administration, histamine targets, binds to and activates histamine receptors. Depending on the amount of histamine administered and the type of receptor that is activated, histamine may exert a wide variety of activities. These can range from pro-tumorigenic to anti-tumor effects and may modulate the immune system to exert anti-tumor immune effects or may contribute to an inflammatory response.