Abstract: A delivery system for delivering drilling fluid additives to a drilling fluid. According to one aspect of the invention, the delivery system comprises a softened, dispersible tablet containing drilling fluid additives, such as lost circulation, seepage control materials, and/or other additive materials. The tablet is preferably prepared by adding a softening agent or softening binder to the drilling fluid additive that will allow the tablet to disperse and revert, or break down, to release the drilling fluid additives in their original particle size into drilling fluids. It is also advantageous for the tablets to be dispersed top-side to ensure that the materials do not, for example, clog screens or damage downhole equipment.