You can get a more potent, higher rda with walmart's one source for women, at $ 4.92.
Usu. B vitamins are a very high rda due to depletion through many type meds, etc. For the non-water soluble - manufacturers know to stay below toxicity.
I usu. add extra biotin ( water soluble) despite dosage. All add-ons, still put me under $12.00 per month. A vit is a vit is a vit...imo.
I can't imagine paying so much for good advertisement.
'just a different pov. 'works for me.
happy hair growing!!!!