[Jazzmynn12345]

I had a blood test for b12 almost two months ago. It showed my b12 level was almost nonexistent.
I took 1,000 mcg sublingual b12 and it brought my level up to over 900 the high limit.
My dr told me to stop it.
A couple of weeks ago, I had it checked again and it dropped to 380, the lower limit.
Can this be why I am really tired, feel disconnected, moody, achy, have heart palpitations like extra beats and whooshing in my ears?
Now my dr said to go back on the 1,000 mcg of vitamin b12 for a month and then stay on 500.
I wonder if low b12 can cause all these symptoms.
I also have been trying to wean off estrogen.

Any help is appreciated.

Thanks

[Umbral_Seraph]

B12 deficiency can really mess you up, and can cause neurological problems (including permanent damage), mood problems and pernicious anemia. I'm not sure what effect your estrogen tapering might be causing, but I wouldn't be suprised if that was also causing you some problems. Did your doctor figure out why your B12 was low in the first place?

[Chuva]

Hi!

I used to have low B12 too some years ago and it was really bad. I was always tired, had paresthesia (my limbs, esp. arms felt numb), fainted a lot, etc. My physician prescribed injections and I felt good afterwards. I've never had a problem since.
Interesting thing is, they never found out what the cause was in the first place.

[Fresia]

B12 is VERY difficult to regulate in the body because it is water soluble and and rapidly eliminated from the body. It is very difficult to overdose on B12, and takes a lot to cause damage. However, low levels are critical and can wreak havoc with the symptoms you describe. Constant monitoring is key until you and your doctor can find the right dose and timing of the dose to stay level.

It can be difficult to track down the reason for low levels of B12. Pernicious anemia is rare and one cause, but a more common cause is that medications can also cause interference of the absorption of it. Regardless of the cause, it should be treated and to stay on top of it. It sounds like your doc is doing that and ask for testing again to make sure the new dose and timing of it are keeping you level. It should be taken right before your next dose, which is called the trough (lowest) level in your system, as opposed to the peak (which is right after your last dose ) this is not a helpful indicator.

Good luck finding the right dose and when the doses need to be spaced apart to keep it level.

I have celiac disease and I'm always low in vit b12 and have to get injections.Maybe you are a celiac?Maybe you could have the blood test to check and see?