All I know is I did have vitamin injections for awhile and I felt great.
Sort of like an Iv of vitamins.

What does your blood work look like? Your yearly physical should have a b12 reading for your blood to let you know if you're deficient.

I was just dx as anemic. So.. My GP has me taking Folic acid. Also, my b12 has been low so I take supplements during the day. Good to hear from you Annie!

My reading shows a connection between myasthenia and Vitamin B12 deficiency caused by pernicious anemia. My mom has that and the MG neuro I saw took special interest in that and put it into my history. My mom has no stomach acid or intrinsic factor that helps in B12 absorption. She has taken a stomach acid supplement most of her life as well as Vitamin B12 injections monthly. She has few MG symptoms but has other AI like celiac and thyroid too.
Flutebell

I have to have B-12 injections every other month for life. I am positive for anti-parietal cell antibody and intrinsic factor antibody. My stomach can no longer absorb B-12 in food or supplements. You cannot survive without B-12. So I believe when you have one autoimmune disease, you have to be on the look out for others. Start by having your B-12 level checked by a simple blood test ordered by your regular doctor. If you are low and a test of supplements doesn't improve your B-12 levels than ask for the 2 antibody tests next. Also when you are tested for anemia ask for the ferritin test too. The B-12 has not helped my MG fatigue or weakness, but if you are deficient it can even affect brain function. I no longer can absorb iron in my stomach and get iron infusions. This is not to scare you, I am actually writing all of this in case someone else reading this needs the info. I have Lupus, Sjogren's, MG, Pernicious Anemia, Hypothyroidism, and Fibromyalgia. Basically it's just a different name for a different part of the body being attacked by the autoimmune system. I am 58 years old so my body has gone a long time without diagnoses, The medications available and information via the internet now, will help us all so much now and in the future. You have a good head on your shoulders, and are good at asking questions! Keep it up. Aloha...Marina

Hi Annie,
During routine blood work late last year it was discovered that my B12 levels were far below normal. I received weekly injections for 6 weeks, then monthly for four months and I now take a supplement daily of 1000 mcg. This is a small pill that you dissolve under your tongue.
My B12 levels are in the normal range now and I will take this supplement forever. I have no idea if it is 'helping' me in any way or not. But being 'normal' has to be good, right?
Hope this helps,
Claire

I did B12 after finding my serum levels were low. The shots made the numbers go up, but I never felt any better. They stopped my B12 as soon as my numbers were "normal" and just check them periodically now. I take sublingual B12 at home to make sure my numbers stay up.
It hasn't helped with the MG at all.
Carly

I have yet to see any reputable source stating B12 is beneficial for MG. Having said that, if you are low, supplement.

I take b12 sublingual every day due to stomach surgery which removed the part that makes intrinsic factor, which is what is needed to make b12 available to the body. Because of this I can only use shots or sublingual. If you are taking b12 tablets and not absorbing it, you can be deficient and it causes neurological problems.
Malabsorption can be caused by disturbances in the gut flora due to antibiotics or even from the slow motility of the digestive tract that a lot of us experience.