pinkrainbows Unfortunately GPs seem to know very little about nutrition and vitamin/mineral deficiencies.
Your B12 is, as you know, desperately low and thank goodness you are having injections. Are you having 3 a week for the first two weeks and then one every three months? I believe that is the standard protocol. Will you be retested at some point? I understand that once supplementing then results will be skewed with future tests, and there is an 'Active B12' test that might be better, because for some people the three monthly injections aren't enough.
Have you been tested for Intrinsic Factor? I.F. is necessary for the absorption of B12. If you lack I.F. then I believe you have Pernicious Anaemia.
Can I urge you to go over to the Pernicious Anaemia Society forum here on Health Unlocked because you will get much better advice over there, I really don't know too much about it other than what I have touched on.
Also, take a look at the B12 deficiency website b12deficiency.info/signs-an... and you might want to check out the films, particularly Dr Chandy b12deficiency.info/films/
Also, spare a little time to look at the video in this post, even if it's only the first few minutes. The post is locked to the Thyroid forum so if it doesn't show let me know and I'll try and get the link to the video for you healthunlocked.com/thyroidu...
The member who made that post is very knowledgeable about B12.
When supplementing with B12 (and I believe this applies to injections as well as oral supplements) a good B Complex should also be taken as all the B vitamins should be balanced. Your GP won't tell you this because he doesn't know. On the thyroid forum it's frequently recommended to take Thorne Basic B, a good quality supplement with bioavailable forms of the vitamins. It contains 400mcg of Methylfolate which will help improve your folate level. Folate is the natural form of folic acid. Supplements that contain folic acid (which is synthetic) require it to be converted by our bodies into folate, not all of us are good at this conversion so it makes sense to take a supplement containing the methylfolate form.
You may need to supplement orally as well as your life long 3 monthly injections. If so then a sublingual supplement is the best form as it is dissolved under the tongue. There are tiny blood vessels under the tongue which transport the B12 directly into the blood stream thereby bypassing the digestive system. If taken in tablet form the B12 gets destroyed by stomach acid. Solgar or Jarrows sublingual methylcobalamin lozenges are highly recommended.
If you do get a B12 supplement then always get the methylcobalamin form, never the cyanocobalamin form for this reason naturalnews.com/032766_cyan...
How low is your iron? Have you been prescribed iron supplements? If you have, or if you buy your own, then each iron tablet should be taken with 1000mcg Vitamin C which aids absorption and helps prevent constipation. Take iron supplements a couple of hours away from other supplements or medication as it will affect absorption of anything else.
Don't forget to ask for your test results when you're at the surgery.
Also, when replying, if you want that person to be alerted to your reply then use the Reply button in the message box or they won't get notification that you've answered their message (I just found your reply by luck ). Also, another way, is by putting @ in front of their user name (with no space) brings up a list of names and you click on the one you want, that then gets out onto your message and turns blue and that means they get sent a notification that you're giving them a shout
I hope that helps.