[Ladymom]

Originally Posted by MyFairLacy

I was going to say the exact same thing. Because it is a meaty chew, the medicine is actually injected into it. So it's possible to have all of it in one small portion of that chew...I highly doubt it's ever evenly distributed in one of them because of it being injected. Those chews are safe for any weight up to 25lbs so just give the whole thing. Lacy has had one every month for three years with no problems and no heartworms

We had this discussion on another forum a couple of years ago and we have a vet who is a member answer the question.

You are exactly right, Heartguard can't be cut. As a rule, only pills that are scored in half have the medication evenly distributed and can be cut. That applies to human medicine, too.

Lady gets Interceptor. She has seizures and it is the safest one for her. Heartguard supposedly has been known to lower the seizure threshold.