The pup's vet visit should also be for the purpose of getting a heartworm "preventative" or a prescription for a heartworm "preventative". The "preventatives" kill immature heartworms and thereby "prevent" adult heartworms. The term "preventative"...

[quote user="ColleenC"]Actually, hearworm meds don't stay in the system. [/quote] ColleenC is correct. Interceptor and Heartgard are out of the dog's system in 24-48 hours. The "preventatives" prevent adult heartworms by killing immature heartworms. Heartworm "treatments"...

[quote user="Katran"]If it's safe to treat him for worms before seeing a vet, I'll do that while also looking for a low-cost/no-cost vet. [/quote] I am not a vet, but if it were my pup, I would go ahead and try Safe-Guard. It is a gentle wormer that has been used for a long time. The...

Maybe this will help: Heartworm " preventatives " kill baby heartworms and are given monthly. Heartworm treatments kill adult heartworms and are very hard on the dog. Janie can be tested right now for adult heartworms.