No Stupid Questions

1. if you aren’t deficient you most likely have many months of b12 store.

2. the tablet is about 1000x what your body can absorb daily. Don’t take two.

3. unless you are just starting the treatment for a profound deficiency don’t sweat about it, but do build yourself a better system to remember.

4. you won’t be anemic because you forgot a few dose, same thing with neurological symptoms: if you feel bad there is probably another explanation.

This isn’t medical advice because we don’t live under the same laws and maybe i don’t have your full information…

Some vegan look into yeast as a source of b12 : same problem than the tablet you need to remember to add it to your recipes. Since your lack of b12 comes from a diet choice we can expect your stomach to produce the “intrinsic factor” required to absorb b12 : you are fine.

Hello fellow ADHD vegan.

It sounds like you have a doctor. Do what they say. I assumed it was enough to take one every week bc it had 1000% the daily recommended dose but I still became deficient. My doctor worked with me to remedy that.

Look, I'm not an expert so take this comment with a grain of salt, but in my understanding vitamins and minerals are stored slowly in the body. There is a limit as to how much you can absorb of anything at one time. Taking two tablets now is probably wasting good part if not all of the second tablet. If your deficiency could be solved faster by taking larger doses your doctor would have already recommended that one for you.

I'd be thinking ways of making sure I remember: set up reminders, keep my pills in two or three places so I can access them immediately, trying to make a routine out of it (it's hard I know), keeping track of it in a journal.

https://www.mayoclinic.org/drugs-supplements-vitamin-b12/art-20363663

Safety and side effects

When taken at appropriate doses, vitamin B-12 supplements are generally considered safe. While the recommended daily amount of vitamin B-12 for adults is 2.4 micrograms, higher doses have been found to be safe. Your body absorbs only as much as it needs, and any excess passes through your urine.

High doses of vitamin B-12, such as those used to treat a deficiency, might cause:

Headache
Nausea and vomiting
Diarrhea
Fatigue or weakness
Tingling sensation in hands and feet

Emphasis mine.

You need a doctor's for the exact figures. Just saying "a pill" without dose is btw completely irrelevant.

And yes, you'll pee most of it out what you can't absorb.

Something to check for is vitamin K (not sure about your local naming scheme though y shot seems to suffer internationally). You're body needs that stuff to absorb the B. I actually have a K production problem, that's why I was B deficient.

Doctor prescribed 10k I.E. B with fitting K - daily! That's a crazy amount that would be absolutely useless without my specific circumstances.

And one more thing: ADHD or not you need to find your way to remember medicine. D just kills your mood, blood pressure in a few years might just kill you.

My approach for example is a the tier alarm system, mix of voice assistant, a daily mail and push notifications. Plus I have my medicine both at home and at work.