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Heartworm Treatment Experience?

Posted on 1/16/25 at 8:26 pm
Posted by WC HICK
Baton Rouge
Member since Jan 2020
112 posts
Posted on 1/16/25 at 8:26 pm
Our family dog had heartworms when we rescued him 2 years ago and vet recommended the slow kill method and we tried that to no avail. I think our only choice now is to do the actual fast kill method but he’s young and worried he wont be able to be calm and not get his heart rate up for the recovery period of 2 months or whatever it is.

What is your experience with this treatment? He’s relatively young maybe 4 years old but he’s very active. Any bad experiences?
Posted by MBclass83
Member since Oct 2010
9764 posts
Posted on 1/16/25 at 8:28 pm to
We did slow kill for a one year old rescue shepherd. Luckily it worked. Good luck with the treatment.
Posted by NewIberiaHaircut
Lafayette
Member since May 2013
12040 posts
Posted on 1/16/25 at 8:34 pm to
We did slow kill with a dog we rescued. Took multiple years to 100% clear up.
Posted by Billieboy
Member since Nov 2017
223 posts
Posted on 1/16/25 at 8:35 pm to
That doesn’t help with the issue at hand
Posted by TDsngumbo
Member since Oct 2011
45441 posts
Posted on 1/16/25 at 8:35 pm to
I just wrapped up the slow kill for my dogs heart worms as well and it took over a year. Poor buddy now has skin cancer. He can’t win!
Posted by Jim Rockford
Member since May 2011
102210 posts
Posted on 1/16/25 at 8:35 pm to
We've done it three times with two dogs. One dog had them twice. They were all on preventative, BTW. The worms are developing resistance.

It went fine, just try to keep them as calm as possible. We never crated ours, just let them chill around the house. They can give you sedatives to give them if your dog is hyper. You don't have to freak out if they hop on furniture or get excited at mealtime. Just don't let their heart rate get elevated.
Posted by NoSaint
Member since Jun 2011
12041 posts
Posted on 1/16/25 at 8:37 pm to
Doing fast with a new adoption right now. Hes been super laid back.

I think, generally, perfection isn’t the expectation. Just keep an eye on things and deescalate instead of actively hyping stuff up is the theme for most dogs.
Posted by ImJustaBoy
Member since Oct 2023
1475 posts
Posted on 1/16/25 at 8:40 pm to
I just finished doing the fast kill in my dog. We did a few weeks of antibiotics and steroid pills, heartguard and then the 2 shots that kill them. He seems to fine and healthy.
Posted by CockyTime
Baton Rouge
Member since Nov 2015
3287 posts
Posted on 1/16/25 at 8:49 pm to
I have almost the same dilemma. I'm just scared he's going to go outside, get too excited and have a heart attack or something and die. He's healthy and eating normally and all that now and I know heartworms jeopardize that for his lifespan but I also don't want to do anything to harm him now when he's generally healthy with heartworms. That's the dilemma at least in my head
Posted by Hondo Blacksheep
Member since Jul 2022
2787 posts
Posted on 1/16/25 at 9:27 pm to
Excellent advice, though fortunately (or unfortunately really) the treatment sufficiently kicks their asses to the point where hyperactivity is not usually a problem (you're essentially poisoning them to the point where the parasites die but not the dog). The size and age of the dog are highly indicative of success, but not necessarily. Like people, some dogs have more fight in them than others.

When I was young, I worked as kind of combined kennel boy / vet tech guy on nights and weekends, everything from cleaning cages to gloving in on emergency surgeries.

It was a high end place and people were willing and able to pay for their pet care.

One night, this couple came in with their dog in the back of the car who had, from their perspective, simply died.

They requested an autopsy, which proved death by heart worm infestation had caused serious malformations in the heart chambers.

In other words, the dog died of a lack of oxygenation bc the heart was no longer functioning correctly.

Anyway, I bring all this up to say it was the first time I ever viewed this situation personally and I was absolutely horrified. I literally couldn't believe the volume - more than a grown man's handful - of these frickers that fully mature from microfilariae into quite large, disgustingly parasitic, adult heart worms. It was really a wake up call for me.
This post was edited on 1/17/25 at 5:17 pm
Posted by jamiegla1
Member since Aug 2016
7552 posts
Posted on 1/16/25 at 10:46 pm to
Did fast kill with my dog 13 years ago. She was a very active dog. We just kept her as calm as possible. She’s 15 now. It’ll be fine
Posted by Spankum
Miss-sippi
Member since Jan 2007
58369 posts
Posted on 1/16/25 at 11:11 pm to
The dog will be alright….most dogs mimic the behavior of their owner, so if you don’t get overly excited, he won’t.

Just don’t take him to the park to run or play fetch or anything like that.
Posted by LRB1967
Tennessee
Member since Dec 2020
21122 posts
Posted on 1/16/25 at 11:18 pm to
I did slow kill with a rescue dog I had back in the 80s-90s. He made a full recovery from heartworm but developed a rare form of cancer later in his life.
Posted by hillrosetiger
BR
Member since Jul 2011
205 posts
Posted on 1/16/25 at 11:52 pm to
Same for our rescue. The fast kill treatment works but it can be painful for the dog on the days the shots are given. You may have to use a crate inside and a leash to go outside, but it’s worth it. The alternative is worse.
Posted by SNAKERIVER
Dallas, TX
Member since Mar 2016
412 posts
Posted on 1/17/25 at 6:35 am to
I lost a dog on the last day of the last treatment. Apparently a worm broke off and traveled to the brain and he died. Happened overnight at the vet’s office.. It is fairly rare but it does happen. I had a good experience with my rescue Chihuahua.

It is very expensive but I guess I would do it again.
Posted by Cajun Tifoso
Lafayette, LA
Member since Sep 2010
2678 posts
Posted on 1/17/25 at 7:17 am to
Not sure of what method I used - took about six months - but I had been advised to keep him calm. And being calm is NOT his natural state. I kept him in a crate and on meds to keep him calm. I had the same worry, but we cut out walks and I kept him on a leash when he went to do his business. He normally has free run of the fenced in yard. He did occasionally get the zoomies, but I was able to catch him and calm him down. Good luck!!
Posted by dakarx
Member since Sep 2018
7828 posts
Posted on 1/17/25 at 8:18 am to
Our vet recommended fast kill (3 months) for our latest rescue/rehome. It was pretty rough on him, he was in obvious pain for after each treatment. but he's been worm free since.

It literally took 4 years of 6 month checkups for him to forgive her! He wouldn't accept treats or much of anything from her..... LOL
Posted by Dixie2023
Member since Mar 2023
3431 posts
Posted on 1/17/25 at 8:26 am to
Adopted a dog with “high hw.” Fast kill, no issues. The issue is keeping them comfy and quiet. One of the 3 injections required an overnight stay per procedure. No issues. He was a shepherd full of anxiety so following his shots we gave him a sedative. No fetch, running, exercise, nothing. Not until tx over and clear. And now, while he are present. Don’t want to risk a clot. A lot of rescues do slow kill. The one I help won’t bf she feels it doesn’t work. Others feel that way too. Hw seems to reappear sometime after slow kill and also heart continues to be damaged. Follow your vet’s advice to the T.
Posted by Reagan80
Earth
Member since Feb 2023
633 posts
Posted on 1/17/25 at 8:37 am to
It’s a pretty awful treatment. We did it for a rescue dog as well. After treatment you have to keep them calm for 30 days. No running etc. Our instructions said keep her crated as much as possible . She was in a lot of pain after the treatment, The second and third treatments were given over a 2 day period. We brought her in one afternoon and they gave her the second shot, the third shot was the next day. Again, we had to keep her quiet for 30 days. After that it was 6 months for a retest. If they are positive, you repeat. I would recommend you get the vet to prescribe pain meds. Good luck! Ours has been negative for almost 8 years.
Posted by SteveLSU35
Shreveport
Member since Mar 2004
14519 posts
Posted on 1/17/25 at 8:46 am to
The worst parts is 1 it's expensive, and 2 trying to keep the dogs to chill out. Our lab mix is hyper as all get out, and man it was tough to keep him from just going on a quick burst.
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