This is what experts say:
"PRObiom ® AllerCare is a modern probiotic that has been specially developed to support the balance of your microbiome and thereby promote harmonious functioning of your immune system. A balanced microbiota can have a positive effect on an overreacting immune system.
PRObiom ® AllerCare contains a unique blend of clinically tested probiotic bacteria and vitamin D3, which have been proven to have immunoregulatory properties. The bacteria and vitamin D3 help the immune system to regain balance and thus contribute to your well-being."