What is the best way to strengthen the immunity of a child who often has a dry cough?

The most important factors affecting the child's immunity are: a balanced diet, systematic physical activity, proper hygiene and length of sleep, and protective vaccinations. If the child often coughs dryly, but has no other symptoms, then this does not necessarily mean a respiratory infection - it is worth considering whether this is not related to dry air, allergens or parasitic infections. Please note that a child aged 3-8 years gets sick on average 6 to 8 times a year and this is within the norm. In this way, the baby builds his immunity and trains the immune system, If the child gets sick significantly more often, and the infections have a severe course, then it is worth consulting a pediatrician. In the case of deficiencies, supplementation can be reached. In winter and depending on the age of the child, supplementation with vitamin D may be particularly advisable. If you would like to reach for a preparation available without a prescription that could support the child's immunity, a detailed study with examples can be found below: https://www.gdziepolek.pl/kategorie/witaminy-i-suplementy-na-odpornosc-u-dzieci