Thank your for your question about 2000 Plus Refill Stamp Ink.
This ink it is slightly toxic because it contains butylated phosphate. If splashed in eyes, wash immediately with warm water then seek medical attention. Ingesting small amounts won't cause anything more than a mildly upset stomach. You can find complete first aid information in the 2000 Plus Refill Stamp Ink Material Safety Data Sheet.
Hope this answers your question!