Naren,
Should not be a problem - the capsule is essentially a repository, with no inherent value of its own, but as a delivery mechanism to take the active ingredient into the GI stream. The capsule is just digestible gelatin, in any case
So, if you can get rid of the capsule, without compromising hygiene, you should be okay - do keep in mind that kelfer has a weird after taste - so that that could be another issue.
And, I am not sure if it fully dissolves in water.
Cheers