Here's what rhymes with methylhistamines.
                        
                        
                    
                                histamines  antihistamines  Words that almost rhyme with methylhistamines
citizens  fistulas  cinemas  citadels  villages  distances  disciplines  syllables  thicknesses  mistresses  sicknesses  singletons  hypnotise  fibulas  witnesses  miracles  resistances  existences  pinnacles  spiracles  simpletons  digitise  binnacles  principles  businesses  principals  originals  carcinogens  reciprocals  thimblefuls  consistences  individuals  privileges  appearances  criminals  peninsulas  exigences  amaryllises  trichinas  aboriginals  volatilises  conditionals  reappearances  noncriminals  nonappearances  agribusinesses  tranquillises