i am brand new here and relatively new to sub - but to answer your ?, i just took a sliver1/8 of an 8mg sub & it was gone in seconds - if it's crushed, just don't swallow for a minute or so & i'm sure it'll do it's job - as i prefaced, i'm new at all of this, so i could be wrong, but they don't take long to dissolve in small pieces, much less crushed - hope this helps |