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Background. A balanced supply of macro- and microelements to various organs and systems is a prerequisite for maintaining human health. Deficiency or excess of macro- and microelements in saliva can be associated with both inflammation and oxidative damage to the oral tissues. Provision of calcium in the human body significantly affects the state of salivary ionome. However, currently there are few studies on the effect of Ca and vitamin D on the state of salivary ionome in healthy children. Purpose: to study the effect of combined use of prophylactic doses of Ca and vitamin D on the concentration of macro- and microelements in saliva of young children. Materials and methods. Under our supervision, there were 36 clinically healthy young children who received Calcicare 2.5 ml 3 times a day for 2 months. The study of the content of macro- and microelements in urine was carried out by optical emission spectrometry with an inductively coupled plasma. Statistical analysis of the results was performed using the application package Statistica 6.1 on a personal computer based on Intel Pentium processor. Results. The study showed that the combined use of calcium carbonate and vitamin D significantly changes the concentration of some macro- and microelements in saliva of young children. The level of some trace elements in saliva before the start of therapy with Calcicare correlated with the frequency of acute respiratory infections. Thus, a higher incidence of acute respiratory infections was observed in children with reduced salivary excretion of Ca and S. Young children had a low concentration of Ca and Mg in saliva before the course of Calcicare therapy. Treatment with Calcicare led to an activation of the metabolism of these macronutrients in saliva of young children, which was characterized by an increase in the level of Ca from 29.5 ± 4.4 mg/l to 60.1 ± 6.8 mg/l (p < 0.01), Mg from 4.9 ± 0.6 mg/l to 9.3 ± 0.8 mg/l (p < 0.01), S from 336.3 ± 3.8 mg/l to 2501.6 ± 275.4 mg/l (p