Histamine Dihydrochloride

Histamine dihydrochloride (INN, trade name Ceplene) is a salt of histamine that is used as a drug for the prevention of relapse in patients diagnosed with acute myeloid leukemia (AML). It is also an FDA-approved[1] active ingredient for topical analgesic use for the temporary relief of minor aches and pains of muscles and joints associated with arthritis, simple backache, bruises, sprains, and strains and is available in over-the-counter (OTC) products such as Australian Dream... [wikipedia]