The best replacement for heartworm is kennel cough.

The best alternatives to heartworm are rated as following:
★★★★★  kennel cough
  roundworm

Your alternative for heartworm is not listed? Suggest!
Speaking about heartworm, one probably shouldn't forget about flea control.

Other search terms related to heartworm and their ratings are:
★★★★★ flea control
★★★★★ flea medicine
★★★★★ flea and tick
★★ interceptor
★ flea and tick protection
★ flea prevention
You have in mind a companion for heartworm and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of heartworm in all years. Click on graph for more.
heartworm
kennel cough
roundworm