Not sleeping after B12 injections - Pernicious Anaemi...

Pernicious Anaemia Society

32,623 members23,985 posts

Not sleeping after B12 injections

MANALMasri profile image
6 Replies

Hi, I was diagnosed with Prenicious Anaemia and low vit D in June, started the injection and Vit D tablets and taken injections regularly every three months. My sleeping stated getting worse since starting the treatment but reached a very bad state after the December injection. I honestly didn't sleep more than an hour a night. started looking into zinc, Magnesium, Potassium and Melatonin supplements and healthy diet high in these. I follow a very clean sleeping routine, restrict no Caffeine, no light, no mobile phone after 7 pm. This week suddenly I am managing to sleep much better thank god but after doing nothing different. I am scared to take my Mach B12 injection worried it could be the cause for my no sleeping the last two months, did anyone else suffer from not sleeping after the b12 injection? Pls x

Written by
MANALMasri profile image
MANALMasri
To view profiles and participate in discussions please or .
Read more about...
6 Replies
Gambit62 profile image
Gambit62Administrator

some people do report problems sleeping as a result of injections - but don't I haven't heard anyone come up with anything quite as extreme as you describe. Others find that B12 actually helps them sleep better - certainly the case for me.

I would suggest that you raise it with your GP.

Foggyme profile image
FoggymeAdministrator

Hi MANALmasri. Just a thought..folate levels that are too low (or indeed too high) can cause insomnia.

When I was first diagnosed I inadvertently over supplemented with folate and only slept for three hours a night for months (having previously not slept when they were too low). Dreadful 😖.

Also worth checking other out other supplements you're taking for possible side effects. Sometimes too much can be as bad as too little.

Has your GP checked your folate levels?

Plus - B12 and folate work together so if folate is too low the body can't utilise B12 properly. Folate levels need to be in the top third of the reference range.

B12 helps me sleep 😄

Good luck...hope you get some good sleep soon 👍

MoKayD profile image
MoKayD

Hi, I just read you post and wanted to know how you are doing now. I started getting B12 shots almost a year ago and felt great until about a month ago. I had a b12 shot and suddenly I could sleep for two nights. I was able to sleep for the rest of the month. I had my next b12 shot last week and I have barely slept since then. I went back to my GP yesterday and told him about my insomnia. He took 7 vials of blood and is running tests. He had never heard of B12 shots causing insomnia. Are you doing better now? Are you still receiving B12 shots?

MoKayD profile image
MoKayD

O.K. I'm updating my last post. I figured out I was having some kind of allergic reaction to the B12 shots. I did a lot of Googling and found a doctor who wrote about some of his patients having allergic reactions to B12 shots and he said this was easily treated with antihistimes. I took a Benadryl before my shot this week and kept taking Benadryl for the last couple of days and it seems to have fixed the problem. Another plus with Benedryl is that it makes me sleepy so I've been sleeping very well.

Omarsasa profile image
Omarsasa

How is ur sleep now

Omarsasa profile image
Omarsasa

Yes I am not sleeping too

Not what you're looking for?

You may also like...

B12 injections

Hi all. Last April I was feeling very poorly after the loss of my grandad and I had bloods done...
Button11 profile image

Do B12 injections ‘block out’ your emotions ?

I inject Vit B12 every 2 weeks. I also take Vit D (took a course of D3 20,000iu 2 a week for 20...
Ryaan profile image

B12 injections discontinued

Hi there I had B12 deficiency diagnosed a couple of years ago, and as it wasn’t diet related, my GP...
Retrofunk profile image

B12 Injections for PA

I have been having B12 injections every 3 months at my GP practice for the last 3 years for PA but...
Xinnia53 profile image

Daily b12 injections

Hi all..Iv posted a while back on b12... I have a family history of pernicious anaemia and Multiple...
Margomck32 profile image

Moderation team

See all
Gambit62 profile image
Gambit62Administrator
Foggyme profile image
FoggymeAdministrator
taka profile image
takaAdministrator

Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.

Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.