He has tried all the B vit with no positive results. He does take a b12 methylfolate vit called homocystex plus but was taken off the other Bs. Thank you so much for your note and suggestions.
i checked it out, the ingredients itself look solid. but its only B2, B6, Folate, B12 and Glycine(TMG). i would not recommend such a high dose supplement without the other vitamins and minerals.
B12 and Biotin also work tightly together. and the other vitamins follow shortly. thiamin is very much involved too, also in neurological functioning. vagus nerve etc.
also b2, b6 and biotin compete for transportation. so not having biotin here, adds further to chance of biotin deficiency.
i'd take such a supplement only if i had a solid base of all b vitamins and minerals and trace elements to not get into imbalance.
i suspect minerals being off balance now, especially potassium and phosphorus but also others.
maybe in your case it makes sense to stop the high dose supplement for a while. try to get some potassium in like with coconut water and phosphorus like with kefir or other rich phosphor products.
then get back with a low dose 100% rda like b complex but also minerals. and then add the high dose seeking health product you have.
i also would think that thiamine as in allithiamine or benfothiamine makes sense in addition (but b1 itself drains on potassium and phosphorus)
please talk about this with your practitioner or who recommended the seeking health.
just from my experience, when i started high dose vitamin D i also got sleepy and tired. what many do not know is that vitamin D also drains potassium. you need to have plenty of it. (and of course magnesium too, but nobody is talking about potassium).
also phosphor. too less in itself can make sleepy or tired, because its involved in building ATP the energy currency of our body.
vitamins and isolated vitamins and minerals can become really dangerous in terms of throwing a system off balance. going low and slow and working up makes sense in sensitive bodys.
again, i can recommend to focus on potassium, phosphor.. and you might try D-ribose, its like phosphor part of ATP.