I tried TTFD, Sulbutiamine, Benfotiamine and Thiamine HCL
They all share the improvment in physical energy and improved breathing in my opinion.
Benfotiamine was more effective for peripheral neuropathy.
TTFD feels very psychedelic and is in my opinion the best form for intellectual tasks but it comes with a lot of side effects compared to the other forms.
Sulbutiamine feels very physical, it's my favorite form because of the physical kick in the ass effect it provides.
Overall they are all good at increasing levels of thiamine.
TTFD is better when the goal is to increase central nervous system levels of thiamine.
Benfotiamine for neuronal pain, it was the only form that was aleviating my headaches and tingling in extremities.
Sulbutiamine is great for physically demanding tasks.
Thiamine HCL is doing a little bit of each one and requires higher doses compared to the other forms.