Because the active ingredients in Hyland’s teething products are formulated in trace amounts, it’s nearly impossible for a child to ingest enough to cause a negative reaction. To put homeopathic dosages in perspective, typically a 10-pound child would need to ingest 1,000 Hyland’s Teething Tablets (at least 6 bottles of 125 tablets) to exhibit even the first possible side effect. Hyland’s Teething Tablets have been safely used by millions of children since being introduced to the U.S. market in 1945! Click here to see what actual parents have to say about Hyland’s Teething Tablets.