I read: "B12 or methylcobalamin can raise body temperature in a high dose."

What would be considered high?

I also read yesterday that a doctor who lived to 108 advised his patients with cold hands and feet to take B12.

Last night I woke up and took a B12 (sublingual), because it's very difficult to take on an empty stomach at other times during the day.

Later I woke up feeling more hot than usual.

As you may recall I've had problems sleeping because I don't sweat from the peripheral neuropathy, so I overheat.

This morning after a hot Mg bath my core temperature was 97.7F. I don't remember the last time it was this high. (It's usually 96 something or low 97s after a hot bath.)

Not sure if B12 is involved...