Before they head back to school, you may want to consider these suggestions to boost immune support for kids - JENNA BLUMENFELD thinking it will never end. The sunshine makes kids and adults feel superhuman. But as back-to-school looms, we know those colds will catch up with all of us sooner or later. So, take this as a reminder that it's time to boost your children's immune system to get them ready for those kid-filled classrooms. Aside from encouraging kids to wash their hands frequently, eat a healthy diet and get enough sleep, try these three easy daily suggestions to boost immune support for kids: A Good Multivitamin: Look for one with low sugar and no artificial colors. Be sure to check nutrient amounts. Some are quite low, so you'd have to take several to reach an effective dose for some nutrients. Probiotics: These helpful bacteria have "a complex relationship" to the immune system, says Tara Skye Goldin, ND, a naturopathic doctor and homeopath in Boulder, Colo. Probably the primary place where our body's inside meets the outside world, the gut (referably a healthy one) is an important first line of defense against evil invaders. Dose: 15-20 billion organisms or CFUs, up to 30 billion after a dose of antibiotics, which kill off gut bacteria. Vitamin D: "Every child should be taking 1,000 to 2,000 IU of D-3 a day; it's huge for preventing illness," says Goldin. Even if your kids spend a lot of time outside, the sunscreen you slather on blocks the rays the body uses to manufacture D. Plus, the school year means more time indoors.