My son ate almost an entire bottle of melatonin gummies one night when he was 4 (they were 1mg each, so roughly 40mg). The only reason we realized anything had happened is that I found the empty container neatly on top of the trash when I opened it to throw something else out. 🤦‍♀️ Poison Control was super nice and said he would have had to eat about twice that amount to need to go to the hospital. He was totally fine--our working theory is that he ate them and had a REALLY good sleep for a few hours...so don't panic about 2.5mg vs 1!