Food supplements and herbal preparations fill the shelves of drugstores and are sold indiscriminately at times on the web. One of the simplest things to do is to make sure your child is eating enough and eating frequently. A meal with 2 tablespoons of vinegar can slow gastric emptying by 30% and also drop gluco shield pro supplement sugar peaks by 30%. Low blood glucose levels on blood tests is something I have seen from time to time in children on the Autism spectrum.