Abstract: A pharmaceutical anti-inflammatory preparation and method for preparation and treatment of arthritis and related inflammatory conditions used for mild to severe pain for relatively long acting results. This anti-inflammatory preparation comprises anti-inflammatory corticord steroid in aqueous-like suspension, a muscle relaxant in oil-like composition, and amide anesthetic compound in aqueous-like composition and Vitamin B-12 in aqueous-like composition. It is prepared by mixing the anti-inflammatory preparation at a rate and for a time sufficient to create a suspended emulsion. The anti-inflammatory preparation is administered while in suspended emulsion by intramuscular patient injection.