Ocean, I have taken a lot of MK4 in the last three years and am completely baffled by this.
First, MK4 is very difficult to assimilate. Nothing happens if you do not take it with a lot of fat, I mean at least a soup spoonful of butter. This is not because it hurts your stomach, it is because without fat nothing happens.
Anyway, this should be taken with fat food, fat because you need fat with it, but not too much fibre if you can avoid it because it could well soak it up and stop the assimilation. Fried eggs is ideal for that purpose.
Second, opening a capsule is fine but MK4 is fast destroyed by light so you should be careful where you do this and how you store the rest of the capsule.
Since you are not taking the capsule, we can rule out the capsule itself.
The capsule is supposed to contain 5 mg of menatetrenone. That is not much, so I suppose that if you manage to divide it, it must be enclosed in some filler powder. That may be the problem. Suppliers know that MK4 only works with fats, so they try to provide a fat with it. Unfortunately it does not say on the label what is in these capsules, apart from menatetrenone. I am always weary of companies who don't disclose the composition of the fillers. All this "no this, no that" does not inspire my trust. What is in there??? I have tried to look at the Carlson labs site bit it seems to be down at the moment.
Have you been taking Carlson supplements before? Did you find them OK?
I very much doubt that the problem is the menatetrenone. As I said elsewhere MK4 supplements are very unequal. I cannot recommend brands I did not try. Obviously after your experience I think I can put the Carslon Labs one in the "Don't try it" batch!
Best
Asklipia