Dear Self –
Yes, if you are going to spend your weekend wandering around a warehouse helping to make a music / circus / vendor event happen, then by all means, take an extra B12 if you think it will help. Even an extra 2500-iu, if that’s what you have handy…
But don’t be surprised if you are totally dead in following days when you drop back down. In fact, it might be a good idea to only drop by 1000-iu at a time.
Feeling stupid for not realizing this sooner,