>>937063732Silica Gel is a desiccant. It's non-toxic, but is a potential choking hazard, especially for small children. It's also occasionally coated in cobalt chloride, which is toxic and can cause nausea and vomiting.
Incidentally, silica gel is unlikely to break down in the human digestive system and can cause additional problems if it builds up and causes blockages.
TL;DR- Silica Gel: Do Not Eat