Today, my legs trembled in front of the cashier girl, and I got nervous. This has never happened to me before. I took B12 in the morning. I was a bit more relaxed yesterday because I didn’t take it. If I use something for anxiety, it would be very helpful. By the way, I drank coffee with increased caffeine last night, and I was more fluent. :)From what I’ve researched, B12 might be causing this.