Are there any health effects associated with borax?
While borax is not acutely toxic (e.g. it takes a big dose to generate serious health effects, including potential effects on the testes), it should not be eaten. Ingesting borax can cause nausea, vomiting, abdominal pain, diarrhea and other symptoms of general gastrointestinal distress. It should also be kept out of eyes and away from any skin abrasions.