What if my 2 year old accidentally took a 75 mg acid reducer tablet?

Accidental ingestion. Before i answer your question, i need to advise you to re-assess your home for its child protectiveness and promise to make it more effective.. Obviously, there must be a fault since your 2 yo ingested a a stray drug. It looks like that was zantac or ranitidine that your child ingested. Provided he is a typical or even heavier 2 yo, that dose may not be toxic. Please be careful from now on.