What Are The Repercussions Of Accidental Ingestion Of Xanax By Child?

I think my 2 1/2 year son ingested a 1 mg xanax. My bottle was up high on the counter but isn't in a child proof bottle. He told me he took one. Not 100% that he did. What precautions should I take. I made him thro up twice and couldn't really tell if he did ingest it. The vomit was chunky and I couldn't ttell if he actually did get a hold of one. What should I do?