The best replacement for histamine is antihistamine.

The best alternatives to histamine are rated as following:
★★★★★  antihistamine
★★★  serotonin
★★  bradykinin
★  tyramine
★  prostaglandins
★  leukotrienes
  homocysteine
  histidine
  low histamine

Your alternative for histamine is not listed? Suggest!
Speaking about histamine, one probably shouldn't forget about alcohol.

Other search terms related to histamine and their ratings are:
★★★★★ alcohol
You have in mind a companion for histamine and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of histamine in all years. Click on graph for more.
histamine
antihistamine
serotonin