We have given ALL of our kids Echinacea since 6 months. None of my kids have had antibiotics and my oldest is 10 years old. We use Herbs for Kids Echinacea/Astragulus or Echinacea/Golden Root. The gummies have too much sugar, which offset the benefits of the nutrients.
Most of my friends do the same, as well as we use therapuetic dosages for short term of vitamin A, as it is the primary nutrient for epithelial tissue, which is what lines the upper respiratory tract. The Echinacea and the A work like charms!
We also give 1 PB8 nearly every day. No other probiotics seems to work the same. Our kids are never sick.