This invention is related to a composition comprising of Garlic, Dried Ginger, Ajwain (Trachyspermum ammi, Carom/Bishop"s weed) and Methi seeds (Fenugreek) taken in mustard oil, the contents boiled to extract the useful components from the raw materials and the resultant oil is then used for treating Rheumatoid Arthritis, Osteoarthritis type of ailments and different types of muscular or joint pains in human beings. Composition comprising for treating Rheumatoid Arthritis, Osteoarthritis, muscular pains comprising; 100 of mustard oil, 10 gm of garlic, 4.4 gm dried ginger, 3 gm of Bishops weed and 4.4 gm Methi seeds.