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nina_kowalski2026-04-18

I was diagnosed with pernicious anemia and my doctor recommended I start taking Cyanocobalamin 1000mcg/ml Inj, 30ml. I've been on it for a week now and I'm curious to hear from others who have tried it. Is it normal to feel a bit tired after the injection? I'm also a bit nervous about the side effects, especially the severe ones. Has anyone experienced any of these? How do you manage any side effects? Thanks in advance!

1 min read
last active 4/18/2026
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Comments (9)

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pamela_hart4/15/2026

It's crazy important to stay on top of your B12 levels, and it sounds like you're doing the right thing by getting injections. Just remember to keep an eye on any changes, and don't hesitate to call your doctor if something feels off.

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william_owens4/15/2026

The injection site might be a bit sore, but you should be fine as long as there's no serious reaction like swelling or redness. I've also had nerve tingling, but you'll should get used to it.

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adam_owens4/15/2026

You might be feeling tired because your body is still adjusting to the increased B12 levels. It can take some time to get used to it. Also make sure to ask your doctor what they think about sublingual B12 tablet

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joyce_ford4/15/2026

I've never heard of this before, but it sounds like a lifesaver for people with B12 deficiency. If you have any more questions, don't hesitate to ask. I'll do my best to help!

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frances_pierce4/15/2026

I've been on Cyanocobalamin for a while now and, honestly, I've had a mix of experiences. When I started, I had some pretty bad headaches and stomach upset, but they went away after a couple of weeks. It's not fun, but it's manageable. Also, make sure to ask your doctor when to switch from weekly to monthly injections

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nicholas_schmidt4/15/2026

I don't think it's normal to feel tired after the injection. In fact, I usually feel a boost of energy! But everyone's different, so maybe check in with your doctor?

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hannah_alvarez4/15/2026

If you're feeling tired, it might be worth talking to your doctor about adjusting the timing of your injections. Also, make sure you're eating well and staying hydrated. Vitamins are crucial for your body to function properly.

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sean_wallace4/15/2026

I've had this happen too. The first day after starting the treatment I felt up and down. The doctor said it was normal as my body was getting used to the injections.

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amber_sherman4/15/2026

I've been on it for a few months now and it's been a game-changer for me. I didn't have any major side effects at first, just some mild dizziness. I made sure to drink plenty of water and eat a balanced diet, which helped a lot. I'd recommend doing the same.