vitamin b is water soluble, so all the excess should just come out when you pee, however vitamin b is also used in energy drinks and energy products because it "wakes you up", so it could very well just be a side affect of this.
if you are unsure however, you should consult your doctor or medical personnel, as it might be something else, and I am not qualified to respond to this, more than the information I've read and have no medical training, so it could be something I am unaware of.
have you checked the side effects of vitamin b? seems like you are experiencing several of those, but it is almost impossible to "overdose" vitamin b since it is not stored in the fat cells like for instance vitamin d does.
Some of the side effects listed below:
Injectable vitamin B-12, which is used to treat significant deficiencies, can cause the following side effects:
mild diarrhea,
itching,
skin rash,
headache,
dizziness,
nausea,
vomiting,
pulmonary edema and congestive heart failure early in treatment,
vein thrombosis,
sensation of swelling,
polycythemia vera (rare, slow growing blood cancer)
Vitamin B-12 can cause very rare but serious allergic reactions (anaphylaxis). This includes swelling of the face, tongue, and throat, and difficulty swallowing and breathing. If this occurs after you take vitamin B-12, call 911 or your local emergency services immediately.
This kind of highlights the difference between correlation and causation.
The root cause of ADHD is not currently fully understood but it's unlikely that it's a vitamin B deficiency.
People with ADHD also routinely have an iron deficiency in their brains during childhood -- which scientists theorize could be a contributing factor -- as well as a genetic anomaly, which appears to be hereditary. It's still not known if either of those things actually causes ADHD. Unfortunately, by the time symptoms are present, the damage is already done.
Taking vitamin B supplements won't necessarily hurt any but I don't know that it would help much either, outside of giving you an energy boost.
Yep, it's a total shitshow with most research and popular science news. More results are coming together about various ND conditions being strictly genetic, yet there's still a ton of people out there talking about what could trigger issues after birth, and cures. You can no more make a zebra into a horse than you can make an ND person into an NT person.
Some of the things people consider issues are unproblematic and natural within ND populations, but NT people rule the world and since they deem it weird, we have to change. I'm at least hopeful that this ND awareness spring we seem to be in, where a lot of adults are becoming aware that they are (and always have been) healthy ND adults, will give rise to some improved acceptance and eventually help shift how we treat ND children to avoid the everyday traumas that I think lead to unhealthy ND adults. I'd be even more optimistic if I'd weren't for the constant denialism and pushback from everyone, including professionals, and even people gatekeeping in the ND population.