Proheart 12 Injection Killed My Dog?

When I searched online ”Proheart 12 Injection killed my dog”, I found this following heart-wrenching story in a dog forum.

It’s been a little over a year since we lost our beloved dog, Scout. She was such an important part of our family and we miss her dearly. It’s hard to believe that it was something as simple as a monthly heartworm preventive that took her from us. Scout was always a healthy dog, so when she was due for her Proheart 12 injection, we didn’t think twice about it. We took her to the vet, and they administered the shot with no problems. A few days later, however, Scout started acting strangely. She was lethargic and wouldn’t eat or drink. We took her back to the vet but they couldn’t find anything wrong with her. The next day, Scout’s condition deteriorated rapidly, and she passed away in our arms. It devastated us”.

This is truly a sad story. But can Proheart 12 Injection kill a dog? We will answer this question along with other things related to Proheart 12 Injection and dog. Let’s start with the most important question:

Can Proheart 12 Injection Kill a dog?

ProHeart 12 Injection is a veterinary medication used to treat heartworm in dogs. It should only be used in dogs that are at least 6 months old and weigh over 2 lbs. It can be given once a month as part of a year-long treatment plan, if your dog is infected with heartworms.

The medication is safe and worth taking, as long as it’s used according to instructions. Few side effects have been reported in clinical trials, though some studies have shown that vomiting, dizziness, dehydration and exhaustion are common side effects for dogs who take ProHeart 12 Injection. Seizures are also possible if the dosage is too high or if you give your dog the wrong dosage.

Is ProHeart 12 Safe for My Dog?

ProHeart 12 is a monthly heartworm preventative for dogs that is administered as an injection by your veterinarian. It is safe for dogs from 1-year of old, and has been proven to be effective in preventing heartworm disease. Some side effects may include mild soreness or irritation at the injection site, but these are usually temporary and resolve quickly.

If you have any concerns about ProHeart 12, talk to your veterinarian.

Why was Proheart Taken off the Market?

ProHeart 6 was taken off the market in 2004 because of concerns about safety. The drug, which is an injectable heartworm preventative, had been associated with rare but serious side effects, including death. In light of these risks, the manufacturer voluntarily withdrew ProHeart from the market.

How Long Do ProHeart Side Effects Last?

ProHeart is a prescription medication used to prevent heartworm disease in dogs. The most common side effect of ProHeart is vomiting, which typically occurs within the first 24 hours after administration. Other side effects may include diarrhea, lethargy, anorexia, and hypersalivation.

Most side effects are mild and resolve on their own within a few days. If your dog experiences any severe side effects or if the side effects do not improve within a few days, contact your veterinarian for further advice.

Does Heartworm Shot Make Dogs Sick?

No, the heartworm shot does not make dogs sick. In fact, it is an extremely effective way to prevent heartworm disease in dogs. The shot contains an antigen that triggers the dog’s immune system to produce antibodies against heartworms.

These antibodies remain in the dog’s system and provide protection against heartworm infection for up to six months.

Side Effects of ProHeart Injection in Dogs

Proheart Injection for Dogs Side Effects The Proheart injection is a new, long-acting heartworm preventive that provides protection against heartworms for up to six months. The active ingredient in the Proheart injection, moxidectin, works to kill existing microfilariae (immature heartworms) and prevent the development of new ones.

While generally safe and effective, there are some potential side effects associated with the Proheart injection that dog owners should know. The most common side effect reported with the use of Proheart is vomiting. Other potential side effects include diarrhea, lethargy, anorexia, and weight loss.

In rare cases, more serious adverse reactions have been reported including seizures, muscle tremors, and difficulty walking. If you notice any of these side effects in your dog after administration of the Proheart injection, please contact your veterinarian immediately. Overall, the Proheart injection is a safe and effective way to protect your dog from heartworms.

However, as with any medication, there are potential side effects that you should know. If you have questions about the ProHeart injection or any other medications used to prevent heartworm disease in dogs, please consult with your veterinarian.

ProHeart 12 Vs Heartgard

ProHeart 12 is a monthly injectable heartworm preventive for dogs, while Heartgard is a monthly chewable tablet. Both are effective at preventing heartworm disease, but there are some key differences between the two products. ProHeart 12 lasts for 12 months, while Heartgard only lasts for 1 month.

This means that you don’t have to remember to give your dog ProHeart 12 as often – just once a year! However, it also means that if you miss a dose of ProHeart 12, your dog is unprotected against heartworms for an entire year. ProHeart 12 also has a slightly higher efficacy rate than Heartgard – 96% vs 90%.

However, both products are considered highly effective at preventing heartworm disease. Finally, ProHeart 12 is much more expensive than Heartgard. A single dose of ProHeart 12 costs around $75, while a month’s supply of Heartgard costs around $10.

Find Out Whether Other Things That Can Kill Your Dog


ProHeart 12 injection has proven to be safe and worthwhile! Few side effects that some studies have published. The side effects of ProHeart 12 include vomiting, dizziness, dehydration, exhaustion and seizures.

These side effects can be dangerous for dogs but it is not very common. It is best to speak with your veterinarian about the risks before giving your dog this medication.

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