for what its worth i've had issues taking b-100's so i'd take b-50's but even those I just quit and just assumed to eat better. I had dizzy spells with them it wasnt very good. years ago i used to get energetic if i took something like that.
Though some will say alcoholics need B vitamins best bet check with your doc or opt for good foods if they are giving you issues.
at day 5 its normal to have jitters I think. I know i did. it'll ease up you can try going for a walk or keeping busy with something? Or herbal teas or something I drank a ton of tea in early sobriety.