I'm so glad I found this community. It's been wonderful to find this much knowledge on the subject. I have a question, did anyone else have a cold nose before they started their B12 shots? The tip of my nose was always freezing, even in the summer. I would cup my hand around my nose to try to keep it warm. I was thinking about knitting a nose cozy. I never thought it could be a symptom of low B12, but when I had my first B12 shot the tip of my nose became toasty warm. It felt so wonderful I told everyone about it. My family thought I was crazy but It's really nice to have a warm nose again. I was just wondering if anyone else experienced this.