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Started By
Message
Dog Heartworm Lifecycle has changed?
Posted on 3/6/24 at 4:30 am
Posted on 3/6/24 at 4:30 am
Got this information second hand from a Vet in Navasota, TX. Can anyone corroborate?
Apparently, there were some hunting dogs in Arkansas and Mississippi that were on heartgard, but still tested positive for heartworm. Vets figured out that the heartworm life cycle had changed.
Old life cycle was 45days. So, 1 pill every 30-days would break the life cycle. Heartgard goes in and spikes then is gone in 24-hrs.
New life cycle is 18-days. So, once a month doesn't work. Proheart is injection that is steady state for 12-months.
Navasota vet saw 4 cases in September.
Apparently, there were some hunting dogs in Arkansas and Mississippi that were on heartgard, but still tested positive for heartworm. Vets figured out that the heartworm life cycle had changed.
Old life cycle was 45days. So, 1 pill every 30-days would break the life cycle. Heartgard goes in and spikes then is gone in 24-hrs.
New life cycle is 18-days. So, once a month doesn't work. Proheart is injection that is steady state for 12-months.
Navasota vet saw 4 cases in September.
10
Posted on 3/6/24 at 5:37 am to MrWhipple
I’m not sure that i really believe that. I’ll ask a vet i know. I could see heartworms evolving to a shorter life cycle but 45 days to 18 seems like the impossible. I could see 45 days to 30 days.
Instead my opinion is that someone probably wasn’t on time with their monthly treatment.
But also i do know that heartgard isn’t as effective, i know my dog and my parents dog as well as several other people i know who have dogs that tested positive while on heartgard. The general consensus is that pro heart is more effective by a large margin.
Instead my opinion is that someone probably wasn’t on time with their monthly treatment.
But also i do know that heartgard isn’t as effective, i know my dog and my parents dog as well as several other people i know who have dogs that tested positive while on heartgard. The general consensus is that pro heart is more effective by a large margin.
Posted on 3/6/24 at 6:22 am to MrWhipple
Heart guard has had breaks for 25+ years, a day late and you can have a break. Ivermectin is an old drug so I would not doubt it is less effective in some areas than the new drugs for HW.
In 20+ years I saw a small # of breaks mainly from owners lack of attention.
Pro Hearts first go round killed a number of dogs so it wasn’t without problem.
They required a neg HW test every six months which helps if there’s a break but quit last time i took dogs in around 2014.
In 20+ years I saw a small # of breaks mainly from owners lack of attention.
Pro Hearts first go round killed a number of dogs so it wasn’t without problem.
They required a neg HW test every six months which helps if there’s a break but quit last time i took dogs in around 2014.
Posted on 3/6/24 at 6:27 am to KemoSabe65
All my dogs have always been on ivomec and never had any problems. Dirt cheap and easy. Don't see myself ever using anything else.
Posted on 3/6/24 at 6:53 am to DownshiftAndFloorIt
I used it But some clients wanted pro heart. One wanted the HG chews, his dog would swallow and shite them out whole. Always received a second dose of liquid.
Posted on 3/6/24 at 7:16 am to KemoSabe65
There are known issues with dogs given heartworm treatment by mouth and some foods causing it to pass through without being broken down and absorbed. Don't know the case here but it appears anecdotal.
Posted on 3/6/24 at 7:27 am to MrWhipple
I'm the type of guy who would weigh each of my dogs the first day of each month, and give a dose of ivermectin accordingly. Never missed the first day of the month. One of my dogs still got heartworms.
My vet said that ivermectin is becoming less effective in the south, and this is a more common occurrence now than ever, so I swapped to Advantage Multi. It's a greasy mess.
Then switched to the 12 month proheart shot and never looked back. All dogs are doing fine on it, and it's way cheaper than Advantage Multi. Give them a bravecto chew every 3 months, and they're good to go.
My vet said that ivermectin is becoming less effective in the south, and this is a more common occurrence now than ever, so I swapped to Advantage Multi. It's a greasy mess.
Then switched to the 12 month proheart shot and never looked back. All dogs are doing fine on it, and it's way cheaper than Advantage Multi. Give them a bravecto chew every 3 months, and they're good to go.
Posted on 3/6/24 at 8:20 am to MrWhipple
Long story short there has been extensive research on the Heartgard/Ivermectin breakthroughs. The breakthroughs are much too common to consider it as an effective med for heartworm prevention. Moxidectin is now the most current and effective active ingredient in effective heartworm preventatives. Moxidectin is the active ingredient in Simparica, Proheart, along with some others. Moxidectin is not 100% effective though, I am aware firsthand of 3 confirmed breakthroughs of Proheart in the last 2 years. Proheart will cover the heartworm treatment as long as a negative test was on file before the proheart was administered.
There is also some off label use for Simparica Trio being used as a slow kill effective method currently by some vets.
There is also some off label use for Simparica Trio being used as a slow kill effective method currently by some vets.
Posted on 3/6/24 at 8:35 am to MrWhipple
This wasn't at Beard Vet Clinic in Navasota was it? Have a good friend thats a vet there and its a small town
Posted on 3/6/24 at 8:45 am to MrWhipple
My 10yr old chocolate lab tested positive for heart worms when he was 2-3yr old. Wife went round and round with the vet and heartgard on them being responsible for the quick kill cost and treatment required (they did pay). She had all the receipts and had never missed a treatment, they even tried to claim that some dogs don’t eat the pill and go spit them up.
I was like this MFr eats broccoli and onions he’s not spitting out a bacon flavored candy!! They made some claims about higher instances of dogs getting HWs while on heartgard since Katrina, not sure if that was coincidence or they were just full of shite.
My previous lab had been on ivermectin his whole life and never had an issue but I had him before I got married and was treating him but my wife thought we needed something “better” and “officially for dogs”
I was like this MFr eats broccoli and onions he’s not spitting out a bacon flavored candy!! They made some claims about higher instances of dogs getting HWs while on heartgard since Katrina, not sure if that was coincidence or they were just full of shite.
My previous lab had been on ivermectin his whole life and never had an issue but I had him before I got married and was treating him but my wife thought we needed something “better” and “officially for dogs”
This post was edited on 3/6/24 at 8:47 am
Posted on 3/6/24 at 9:08 am to MrWhipple
My red lab tested positive last year and has been on heartguard since day one. My vet checked my purchase history and heartguard paid for everything plus got a 12 month refill. Not sure if this is some kind of cash cow for vets. Never saw one scope, blood test, just have to trust what they say. I've had to pay hundreds of dollars for dogs that I adopted to get rid of heartworms.
Posted on 3/6/24 at 9:15 am to DuckSausage
It was not. South central.
Posted on 3/6/24 at 9:27 am to MrWhipple
I need a flea treatment as well as heartworms (pet, not hunting dog, inside/outside) and have been very happy with Revolution. He's right at the weight limit between doses so I buy the smaller one and just do it every three weeks, and that makes it more consistent for the fleas. I'd been using Trifexis but much prefer this one, and it covers ear mites as well.
For those who balk a bit at some of the pricier options, if they carry what you're looking for use petbucket. Markup on vet meds is crazy.
For those who balk a bit at some of the pricier options, if they carry what you're looking for use petbucket. Markup on vet meds is crazy.
Posted on 3/6/24 at 10:36 am to MrWhipple
quote:
Proheart is injection that is steady state for 12-months.
This is what I use.
Posted on 3/6/24 at 11:01 am to KemoSabe65
quote:
Heart guard has had breaks for 25+ years, a day late and you can have a break. Ivermectin is an old drug so I would not doubt it is less effective in some areas than the new drugs for HW.
Keep in mind that the active ingredient in Heartguard is Ivermectin. Heartguard plus has an added dewormer (Pyrantel).
Which is why you should be using a supplemental dewormer if you are on generic ivermectin or Proheart.
Posted on 3/6/24 at 12:54 pm to MrWhipple
quote:
Got this information second hand from a Vet in Navasota, TX. Can anyone corroborate?
its complete and utter rubbish. life cycle of the parasite has not changed.
like all preventatives there's never a 100% guarantee rate even if you do everything right.
what has been discussed in the veterinary community is the potential of drug resistant heartworms developing. Particularly for the older, and widely used drugs. How much this actually comes into play, or if it really does, is still discussed. The number 1 culprit remains non-compliance.
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