T
The Daily Insight

Is ProHeart safe for dogs

Author

Sophia Edwards

Published Feb 17, 2026

ProHeart 12 Is Effective & Safe Was 100% effective against heartworm disease* in dogs. Was demonstrated to be safe for most types of dogs over 12 months, including: Reproducing dogs. Collies sensitive to ivermectin—a common ingredient in monthly heartworm products.

Why was ProHeart taken off the market?

ProHeart 6 was approved in 2001, then voluntarily removed from the market in 2004 after reports of adverse events, including death, anaphylaxis, seizures, elevated liver enzymes, and immune-related blood problems.

What are the side effects of ProHeart 12?

From the clinical trials, the only reported side effects of ProHeart 12 include vomiting, lethargy, diarrhea, anorexia and hypersensitivity reactions.

What is the safest heartworm medication for dogs?

Given at the proper doses and under the supervision of a veterinarian, ivermectin is safe for most dogs and is very effective in treating and preventing a number of parasites.

Can a heartworm shot make my dog sick?

ProHeart 6 can also cause vomiting, diarrhea, seizures, and changes in appetite or physical activity level. Contact your veterinarian immediately if your dog has an allergic reaction or any signs of illness after receiving a ProHeart 6 injection.

How much is a ProHeart 12 injection?

ProHeart 6 is a heartworm prevention shot that lasts six months ($50 to $150 per six months), and ProHeart 12 is a shot that is given annually ($75 to $350 per year). It’s generally recommended that heartworm medications be administered year-round to best prevent against these deadly parasites.

Do dogs need heartworm medicine?

One of the most common questions heard by our veterinarians during an annual wellness exam is, “Does my pet really need heartworm prevention?” To put it simply: yes! Even if your pet is considered “indoors-only,” all cats and dogs should be on a heartworm prevention medication.

Can ProHeart 12 be given with vaccines?

Caution should be used when administering ProHeart 12 concurrently with vaccinations. Adverse reactions, including anaphylaxis, have been reported following the concomitant use of moxidectin microspheres and vaccinations (see WARNINGS and POST-APPROVAL EXPERIENCE).

How much is ProHeart 12 shot?

Dog prices:(100# +)$75Proheart 12 (12 month heartworm prevention)(<25#)$85(26-50#)$105

What do vets use to treat heartworms?

An injectable drug, melarsomine (brand name Immiticide®), is given to kill adult heartworms. Melarsomine kills the adult heartworms in the heart and adjacent vessels. This drug is administered in a series of injections. Your veterinarian will determine the specific injection schedule according to your dog’s condition.

Article first time published on

How long can a dog live after being treated for heartworms?

My dog was treated for heartworm 4 months ago and his heartworm test is still positive. What does this mean? After treating a dog with melarsomine injections, adult worms may continue to die for more than a month following this treatment.

Is ProHeart 12 safe for heartworm positive dogs?

Infected dogs should be treated with an adulticide to remove adult heartworms. ProHeart 12 is not effective against adult D. immitis. Caution should be used when administering ProHeart 12 to heartworm positive dogs (see ADVERSE REACTIONS).

Does ProHeart injection prevent fleas?

1 Injection of Proheart 12 Simparica is a oral chewable flea and tick prevention. When given monthly, it will provide your dog with year round flea and tick coverage.

Can you give ProHeart with vaccines?

Caution should be used when administering ProHeart 6 concurrently with vaccinations. Adverse reactions, including anaphylaxis, have been reported following the concomitant use of moxidectin microspheres and vaccinations (see WARNINGS and POST-APPROVAL EXPERIENCE).

How much does a heartworm shot cost?

WeightTotal Price2nd Payment2-20 lbs$225.00$150.0021-40 lbs$325.00$175.0041-60 lbs$425.00$225.0061-80 lbs$495.00$270.00

Does heartworm treatment shorten a dog's life?

This treatment does not actually kill the worms, however it does decrease their lifespan; keep in mind, however, that the average heartworm can live six years, so shortening that lifespan could still mean your dog having a heartworm infection for four more years.

Is there an alternative to heartworm medicine for dogs?

Dogs needing conventional treatment may benefit from herbs such as milk thistle and homeopathics such as berberis; these minimize toxicity from the medications and dying heartworms.

Do dogs poop out heartworms?

Although many worm types, such as roundworms and tiny hookworms, are shed in your pet’s feces, heartworms do not live in the gastrointestinal (GI) tract, and are not found in feces.

Can you give your dog heartworm and flea medicine at the same time?

FLEAS, TICKS, & HEARTWORMS, OH MY!! One of the new products we recommend is NexGard, from the makers of Frontline. It is a once a month, ORAL, flea and tick prevention for dogs. No more sticky, smelly topicalls. It can be given at the same time as their monthly Heartgard– ONCE-a- MONTH!

Can you give dog heartworm medicine without testing?

If a heartworm-positive dog is not tested before starting a preventive, the dog will remain infected with adult heartworms until it gets sick enough to show symptoms. Heartworm preventives do not kill adult heartworms. Also, giving a heartworm preventive to a dog infected with adult heartworms may be harmful or deadly.

Do all mosquitoes carry heartworm disease?

Aedes, Anopheles, and Mansonia species of mosquito are all capable of transmitting heartworm. Humans and other mammals are accidental hosts and cannot play a role in spreading heartworm as the worms do not produce the microfilariae necessary for transmission.

How much does pro heart cost?

The ProHeart 6 acquisition cost was calculated as $12.32, the average cost to veterinary practices for a ProHeart 6 dose for a 35-lb dog. Table 4 shows the average invoice charges for a ProHeart 6 second-dose visit. Of the $121.13 average total revenue, the ProHeart 6 dose itself was only $45.96 on average.

Is heartworm treatment expensive?

The average cost of heartworm treatment for dogs is often around $1,000. However, it can range from $500 to $1,100 or even more depending mainly on the size of your dog, veterinary bills, and the stage of the disease.

Is ProHeart a dewormer?

Keep up the good work- ProHeart is not for you! We still strongly recommend the monthly preventatives, both oral and topical, over ProHeart because they also provide a monthly deworming against intestinal worms.

How can you prevent heartworms in dogs?

  1. Give your dogs the best food. Home-cooked meals for your dog are, of course, best, but it can be difficult to keep up with cooking your dog’s meals all the time. …
  2. Get your dog regular checkups. …
  3. Use preventative heartworm medicine.

What is the safest flea and tick treatment for dogs?

  • Frontline Plus is an OTC product that uses fipronil and (S)-methoprene to attack fleas and ticks at every life stage. …
  • Trifexis employs spinosad and milbemycin oxime to keep dogs protected from heartworms and intestinal parasites as well as fleas, but it does not work against ticks.

Which dog flea and tick control is the best?

Frontline Plus is our top nonprescription recommendation because it kills ticks and fleas, controls flea infestations, and kills chewing lice, all with one easy application. When used primarily for flea control, each dose of Frontline Plus lasts up to three months.

Does Simparica prevent heartworm?

Monthly Simparica Trio prevents heartworm disease, kills adult fleas and is indicated for the treatment and prevention of flea infestations, the treatment and control of tick infestations, and the treatment and control of roundworm and adult hookworm infections in dogs and puppies 8 weeks of age and older, and weighing …

Can a dog recover from heartworm?

No one wants to hear that their dog has heartworm, but the good news is that most infected dogs can be successfully treated. The goal is to first stabilize your dog if he is showing signs of disease, then kill all adult and immature worms while keeping the side effects of treatment to a minimum.

What are the side effects of heartworm shots?

Twenty-six dogs (52%) experienced minor complications, such as injection site reactions, gastrointestinal signs (vomiting, diarrhea, inappetance), and behavioral changes (lethargy, depression) during or after heartworm treatment.

Can my dog jump on the bed after heartworm treatment?

There is no reason to allow running, jumping, or other physical activity at any time for 8 weeks after the start of the injectable heartworm adulticide treatment.