Lanso D 60 mg delayed-release capsule is a Proton Pump Inhibitor (PPI), that inhibits gastric acid secretion. It is the R-enantiomer of lansoprazole (A racemic mixture of the R- and S-enantiomers). This is supplied as a Dual Delayed Release (DDR) formulation in a capsule for oral administration. Lanso D 60 mg capsule contains a mixture of two types of enteric coated granules with different pH-dependent dissolution profiles.Lanso D 60 mg is a PPI that suppresses gastric acid secretion by specific inhibition of the (H+/K+)-ATPase in the gastric parietal cell. By acting specifically on the proton pump, Lanso D 60 mg blocks the final step of acid production.