It's totally true kha as some of the pills're specialized designed to have the sustained release effect kha, by cutting in half or grinding it down into a small granule or powder would destroy the time-released effect.

So the bottom line is instead of getting a bit by bit of drug A to control your pain for 12 hour period (side effect and toxicity can also be minimized by this method), you will then get an enormous dose that can harm your body kha.

So be careful and consult the pharmacist if you have any question regarding to this matter kha.

Thank to P'Due for this useful info duay na kha.