Feeling emotionally dull and lazy after taking TTFD

So I tried taking TTFD for the first time recently and it made me noticeably lazier and very emotionally flat. I find it hard to really feel an emotion lol. I'm just so indifferent to everything. Is this normal?

Today I've increased the dose to 200mg and it's the same. Other supplements I take are magnesium glycinate, potassium, glycine and taurine.

I also tried Thiamine Hcl a while ago which made my blood pressure and heart rate rise significantly to a point where I couldn't sleep. However since then I've made some dietary changes that could play a role as well. Maybe I would tolerate it better now