re: Update in OP; Treating young lab for heart worms

quote:

---

The problem with heartguard is the dosage is too low. There are some dogs that can't handle the higher dosage. I find that my BMC cur and mutts don't seem to mind.

---

Now this could be a more reasonable argument. If heartworms in the deep south are developing resistance to ivermectin at the doses typically used in heartworm preventatives it is possible that a higher dose would be required for prevention.

quote:

---

Yeah it's not pure 100% Ivermectin.

---

ivomec isn't 100% ivermectin either. Which is a good thing b/c that would make it unstable and difficult to dose at a high concentration. It's a 1% solution (or 10mg/mL) that also contains other ingredients for stability and to make it safe for injection or oral administration.

Oral forms of ivermectin like pastes and chewable tablets also combine ivermectin with other ingredients for the same reasons.