Hmmm,
Tens into halves is easy but 20's into quarters is tough.
Do it with a safety razor blade (one sharp side.) Start with a little sawing motion to get a little notch before beariing down.
If that mashes the pills, try the final break by notching the 10 mg. piece on BOTH sides and then, if your fingers are small enough, grab each end try to snap them. I have big hands and I wouldn't be able to do it, although I can snap the 20's into two tens with just my hands, no notching needed.
A pill cutter will tend to smash the small pieces because it exerts only pressure (no cutting action)...like trying to slice a ripe tomato with just pressure...SQUOOSH!
OK, I tried a 20 iinto 4 pieces...I was successful with notching and then pressing...it cut cleanly. (Now I must remember to take both pieces tonight

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