Definition: Sulfasalicylic acid is a type of chemical compound that is used as an antibiotic, antiviral, and anti-inflammatory agent. It has the formula C4H8N3O2. Sulphasalicylic acid can be found in various forms including water-soluble (sulphate), water-soluble salts (salicylate), and crystalline form. It is also known as ascorbic acid or vitamin C.