Autism is the term for a different way of being neurologically that has been around for a long time. People with autism often have a unique set of nutritional challenges due to more restricted diets and potential differences in the microbiome. Many of the supplements that are available for those with ASD have low risk for adverse effects, so they are worth trying.
Remember to talk to your doctor about any supplements you are thinking about taking. While most of the ones for ASD are rather safe, you can overdose if the dosages are too high. Some can interfere with medications as well.