A couple nights ago I tried several supplements including sublingual B12 (pill that dissolves under the tongue). It was 1000mcg. I took it at night. For the next 24 hours I had complete insomnia and a bit of paranoid near-hallucinations. I don't know whether it was the B12 (I also took Co-Q10, Chrmium, and vitamin E at the same time) but several people I talked to thought it was probably the B12. Anyone else with a similar experience?