probiotic and vitamins

You can check this brand Biogaia, not sure if they have probiotics for older children though.

I gave probiotics LB30 or LactoGG for digestive system as for vitamin I gave sambucol.

hope this helps https://sg.theasianparent.com/best-baby-probiotics-that-your-child

I fed my LO Scott’s Emulsion cod liver oil to build up their immune system.