Most likely.

How?

Assume the worst considering the additives despite what's listed on the bottle.

The originals used to be extractable with DH20 but I doubt these are.

Do some simple tests with single pills.

Start with water and then move to thw alcohols and see what reX's after dissolution/evaporation.

If your eye, nose and tongue are trained enough you'll know (relatively) what's going on. If you don't then keep reading more stuff here and keep experimenting.

A lot of this stuff can't bee learned by just reeading.