Can I get TO MUCH B12?

I went to purchase some B12 Sublingual today as I am runing low. When I got home and opened them,I realized the dosage is 2500mcg, not 500 as I"m taking now. If I take them, what will happen? Is there a such thing as getting to much? I can't take them back cause I opened them grrr.

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.