2 forms studied
Does vitamin b6 help with brain fog?
Yes — but only in one form. Vitamin B6 (Pyridoxine HCl) is the one that was tested, and the others sold for this do not carry the same evidence.
Form by form
Strongest first. Evidence for one salt or ester is not evidence for another, so each is rated on its own trials.
Vitamin B6 (Pyridoxine HCl)Solid
Trials used 25–50 mg · 1 study · tested as Pyridoxine hydrochloride (pyridoxine HCl) 20 mg/day
Vitamin B6 (P-5-P)Not verified
Trials used 25–50 mg · 2 studies · tested as Pyridoxine hydrochloride (pyridoxine HCl)
Worth knowing before you buy. Vitamin B6 (P-5-P) is widely sold for brain fog, but the trials behind that use tested vitamin b6 (pyridoxine hcl) instead.