Hi My kid is 9+ years old. Recently during his neurologist follow up, Dr did blood work for his vitamin D. I never did this blood for him before. The results came out as 10. The neurologist called me and said it's very low for his age. They wanted me to start the OTC vitamin D and calcium to improve his vitamin d. He takes multi vitamin everyday which has around 800 units of D but they wanted him to take 2000 units everyday along with 800 of calcium. His daily vitamin doesn't contain that dosage of D. So I have to buy the correct OTC dosage for D. I tried searching in Walgreens and Costco, but couldn't find the correct dosage OTCs. Does anyone have any suggestions for any brands for vitamin D OTC for kids? Did it help your kid to get good increase in the D in blood?