Compositions with synergistic anti-inflammatory effects in inflammatory diseases resulting from activation and consequent degranulation of mast cells and followed by secretion of inflammatory biochemicals from the activated mast cells, the compositions containing one or more of a flavone or flavonoid glycoside a heavily sulfated, non-bovine proteoglycan, an unrefined olive kernel extract that increases absorption of these compositions in various routes of administration, a hexosamine sulfate such as D-glucosamine sulfate, S-adenosylmethionine, a histamine-1 receptor antagonist, a histamine-3 receptor agonist, an antagonist of the actions of CRR, a long-chain unsaturated fatty acid, a phospholipid, Krill oil, a polyamine, glutiramer acetate and interferon. Certain of the present compositions are useful in protecting against the neuropathological components of multiple sclerosis and similar inflammatory neurological diseases.