Umbridge and Veritas Serum

[KLMF at aol.com]

No: HPFGUIDX 104519

I don't know if this topic has come up...

Veritus serum.....According to Snape, he gave Umbridge the whole bottle for 
use on Harry and told her "only a few drops should do it", but the bottle was 
apparently all used up by Umbridge. Any ideas on whom it may have been used on 
besides Harry, if anyone?  After all, we don't actually know if Umbridge used 
it all at once on Harry against Snape's directions,  or perhaps took advantage 
of having the stuff and tried to use it on anyone else?  Who else would 
Umbridge try to use it on? (unsuccessfully, of course, since it was (supposedly, 
according to DD)fake in this case)

Thoughts?

Karen F