The invention pertains to a particulate composition comprising calcium lactate and calcium citrate microparticles having an average diameter from 0.1 μm to 20 μm, wherein the composition is in the form of particles with an average diameter from 25 μm to 1 μm, wherein the ratio by weight of calcium lactate to calcium citrate, based on the dry weight, is 80:20 to 30:70 , and wherein the calcium lactate is a non-polymeric agglomeration agent for the calcium citrate microparticles. The invention further relates to a process for producing the particulate composition wherein an aqueous solution of calcium lactate comprising calcium citrate microparticles is spray-dried to the particulate composition, to the use of the particulate composition as calcium-enhancer, and to alimentary products.