TTFD is a B1 (Thiamine Tetrahydrofurfuryl Disulfide)
The chemical Allithiamine (thiamine allyl disulfide or TAD) en.wikipedia.org/wiki/Allit...
The product Allithiamine does not contain Allithiamine, it contains 50mg of TTFD walmart.com/ip/Allithiamine...
The generic name for TTFD is Fursultiamine en.wikipedia.org/wiki/Fursu...
The prescription drug in Japan “Arinamin-F” active ingredient is pure “Fursultiamine hydrochloride”. Can be ordered in 5mg, 25mg and 50mg tablets. mimaki-family-japan.com/ite...
Also, dpkitaoka.com/product-page/...
Over-The-Counter (OTC) drug in Japan Arinamin-EX Plus contains other stuff alinamin-kenko.jp/en/produc...
Ingredients: Fursultiamine (vitamin B1 derivative) 100mg (in fursultiamine hydrochloride equivalent, 109.16mg). Via emails with Alinamin Pharmaceutical, I have determined: 1) 100mg is for 3 tablets 2) Fursultiamine is TTFD and the “The "hydrochloride" part comes off when dissolved in the stomach, etc., so it does not affect absorption”.
I would prefer a reference that states “fursultiamine hydrochloride” is as absorbable in the body as Fursultiamine (TTFD). “Fursultiamine hydrochloride” is marketed as odorless TTFD.
Oh, Ecological Formulas has another product Lipothiamine which is also TTFD. pureformulas.com/lipothiami...