Trying to separate three different claims about vitamin K2: that it is the right molecule, that it is the right dose, and that it does something useful.
I have started logging dose, time, and sleep because otherwise the anecdote is just a mood.
Vivid dreams and mild headache for the first 7 days, then nothing. Textbook for this class, apparently.
There is a serious question about whether the studied form matches what is sold, and nobody in a thread can answer it.
Fat soluble means it accumulates, so the dose ceiling is not theoretical.
Interested in the methods more than the conclusion.
Loose evidence is not nothing, but a washout either side is the only reason to trust your own take.
A certificate of analysis answers one question and gets quoted as though it answers four.
Three questions kill most of the confidence in a thread like this: sample size, blinding, who paid.
I would take the narrow conclusion. Broad ones are more interesting and less true.
Log dose, time and sleep. Ten seconds a day and it turns the anecdote into something you can look at.
Baseline first.