The decision to use a pill splitter or not is between you and your doctor with possibly your pharmacist being consulted. If you do use a splitter the best one I have found is one where the pil is held in a V shape so it can easily be positioned for the cutting edge. Then when splitting, slowly apply pressure to the cutting edge. Most every pill is not flat and to keep the pill positioned in the proper place a slow and steady pressure is best. I have used a splitter for years for my Synthroid so I was very experienced with the technique I described. You are right, pills are not split evenly and some crumble. This is true for me even with this technique, rarely yet it happens. You must also clean the cutting edge every few pills for clean cuts.