I am recently diagnosed as having B-12 deficiency, was experiencing neuro symptoms of various kinds. After 3 shots of B-12, those symptoms are much improved.

However, I've noticed that I have some odd reactions to the shots. (Well, odd to me!)

After the shots my symptoms include:
* feel very one edge (almost like too much caffeine, but without the mental alertness), anxious and twitchy
* trouble sleeping
* headaches and shooting pains in the head, pain in temples
* minor heart palpitations or digestive/muscle spasm, not sure which - something in my upper abdomen or chest is wiggling around, especially when I lie down

From what I've read, some of those symptoms are somewhat common, yes?

Odder still: yesterday an hour or so after my shot I started feeling very cold, almost shivery. I took my temp at it was 96.5. My temp is usually about 97.7 for the past few years, never seen it below 97 (recently found out I'm marginally hypothyroid too, which could explain that). A half hour later it was 95.6, which is scary low for me - anything below 95 is supposed to be hypothermia. Was feeling very cold by that point. Hopped in a hot shower for 20 mins, and that warmed me back up into the 97's.

I should specify that throughout all of this I was in a warm house, dressed warmly.

Later in the day it dropped into 96's again, but never lower. Today it's been better, and my other "shot symptoms" have lessened as well.

Has anyone else experienced this kind of temperature drop or fluctuation as a result of taking in B-12? Is this something I should be concerned about? (I'm assuming that the other symptoms aren't huge deals.)

Thanks very much!

One interesting note: before I got my first shot, I had different temperature-related symptoms. I would feel alternately very hot/cold, found that it was hard to find a temp at which I felt comfortable. I'd either be freezing or sweating. But when I looked at the thermometer it was never far off from 97.7. Now, I don't have those swings in feeling, and almost never feel too hot, but when I start feeling cold it's reflected in the thermometer.

I am hypothryoid and often get very chilled. You might want to have your TSH rechecked. Its never happened though to me because of the B-12 as far as I can tell. The trouble sleeping and heart palpitations could also be related to the thryoid issue. Have you had your thryoid antibodies tested? Sometimes if you have hashimotos thyroiditis it can go up and down abd cause some of those symptoms transiently

If you are particularly stressed your adrenals could be a bit fatigued and that can contribute to thryoid acting up and pain getting worse since the body cannot produce enough neurotransmitters to maintiain all the body functions at full speed.

Here is a site with suggestions:

http://www.mall-net.com/mcs/coldbody.html

Being cold is also a very clear sign of low blood sugar.
If you feel better after eating, then that would be a big clue.

Shelley: yes, I've had thyroid testing done. My TSH is high, my T3 and T4 are right on the borderline of hypo. (At least they were 3 weeks ago.) My morning cortisol tested fine, still waiting results on 24 hour cortisol test.

The hashi's antibody tests were negative, but my doc says that isn't completely reliable. (At least w/ the version of the test I had.) So so far I don't know what's causing the low thyroid.

I was prescribed synthroid thryoid hormone, but haven't started taking it yet. Had read that some people w/ low B-12 had trouble tolerating it. Plus I just wanted to recover from the B-12 first, give my body a chance to heal from that, and then worry about the thyroid, as it's not even that low yet.

If anyone thinks I'm being silly and should start the thyroid meds now, please let me know.

Shelley, when you get chilled, does your oral temp actually drop? How low does it get?