Fleas are a common problem for dogs. They can cause serious health problems and even death, so it’s important that you prevent them from infesting your pet. A flea collar is one way to do this, but they aren’t always effective. That’s why many pet owners choose to use heartworm medication like Heartgard instead of traditional flea-preventing methods.
Heartgard prevents heartworm disease by killing the parasites that spread it, but it also kills other parasites in your dog’s body like ticks, hookworms, and roundworms as well as fleas. This means that when you give your dog Heartgard every month as directed by their veterinarian, you’re protecting them against all kinds of pests including fleas.
Heartgard is actually recommended for prevention of heartworms, fleas, and other parasites. Heartgard is an oral solution that protects your pet from heartworms and other parasites. Heartgard Plus works by killing the fleas that might feed on your dog or cat. It does not kill the adult fleas, but rather the eggs and larvae that cross the placenta from the mother to the unborn pup or kitten. It kills flea larvae for twenty-one days after a single treatment. Dogs and cats are susceptible to a wide variety of parasites, some of which can be transmitted to humans. Some infestations, such as heartworms-which develop in the heart and lungs-can prove fatal. So it’s important for pet owners to know what fleas are and how to eradicate them from their pet’s environment.
Heartgard Side Effects Puppy
Heartgard is a flea and ticks preventative for dogs and puppies. It’s important to remember that this medication is not a cure for heartworms, but it can help prevent them. The medication is administered orally once a month, beginning at six months of age.
However, it can cause some side effects in puppies like vomiting, diarrhea, or lethargy. You should consult your vet if your puppy experiences any of these symptoms after taking Heartgard.
How Long Does Heartgard Side Effects Last
The side effects of Heartgard are not permanent and will go away within a few days.
The most common side effects are vomiting, diarrhea, and lethargy. These symptoms usually occur between 3-5 hours after taking the medication but can occur up to 24 hours after administration. If your pet is experiencing any of these symptoms, contact your veterinarian immediately.
How Long Does It Take for Heartgard Plus to Kill Worms
The answer to this question depends on the type of worm your pet has. Heartgard Plus is a broad-spectrum treatment that kills a number of different types of worms, including roundworms and hookworms. The time it takes for Heartgard Plus to kill these worms depends on how long they live in your pet’s body, as well as whether or not they are already dead when you administer the medication.
Roundworms live in the intestine of your pet, where they feed on blood. They can also be found in other tissues like the liver and lungs. Hookworms live in the stomach lining and intestines of your pet, feeding on mucus and blood. They can also be found in other tissues like the liver, lungs, and kidneys.
To kill these parasites Heartgard Plus, it must be administered once every month for three months straight. After that time period has passed, you should have no reason to believe that there are any more worms left alive inside your pet’s body (unless there was another infestation).
List Of Other Products That Protect Against Fleas
Fleas are a common problem for pet owners, and they can be especially hard to combat. But there are ways to protect your pet from fleas without using chemicals or pesticides. Here are some of the best products we’ve found that keep fleas at bay:

PetArmor Plus Flea and Tick Prevention for Dogs, Dog Flea and Tick Treatment, Waterproof Topical, Fast Acting, Small Dogs (5-22 lbs), 6 Doses
Price : 34.06
Features :
- EFFECTIVE, WATERPROOF FLEA TREATMENT FOR DOGS: PetArmor Plus is a waterproof, flea & tick topical prevention for dogs that kills fleas, flea eggs, flea larvae, ticks, and chewing lice for up to 30 days after application.
- TRUSTED, VET QUALITY FORMULA: Containing fipronil and (S)-methoprene, the same active ingredients as FRONTLINE Plus for Dogs. PetArmor Plus for Dogs has a powerful formula that starts to kill fleas within 24 hours.
- BREAK THE FLEA CYCLE: Unlike other flea and tick treatments that may temporarily suppress flea activity, PETARMOR Plus Dog Flea Treatment works by effectively breaking the flea life cycle. Kill flea eggs and larvae to prevent re-infestation.
- FLEA AND TICK PROTECTION: PetArmor Plus for Dogs flea drops protects your furry family members from brown dog ticks, American dog ticks, Lone Star ticks, and deer ticks (which may transmit Lyme disease).
- EASY-TO-USE, LONG-LASTING: PetArmor Plus flea and tick treatment comes with six (6) waterproof topical applications that provide your pet flea protection and control for six (6) months.

Seresto Large Dog Vet-Recommended Flea & Tick Treatment & Prevention Collar for Dogs Over 18 lbs. | 8 Months
Price : $63.98
Features :
- Vet-recommended, premium flea & tick protection for dogs & puppies without the price tag
- Long-lasting flea collar kills & repels fleas for 8 continuous months
- Seresto is the #1 selling non-prescription flea & tick brand, stocked by 8,000 vet clinics (Elanco Animal Health, data on file)
- Starts working within 24 hours to kill & repel fleas by contact so pests don’t have to bite your dog to die
- Hassle-free, non-greasy, easy-to-use flea & tick protection

Vet’s Best Flea and Tick Home Spray | Flea Treatment for Dogs and Home | Plant-Based Formula | 32 Ounces
Price: $17.97
Features :
- GENTLE PROTECTION: Vet’s Best Flea & Tick Home Spray uses certified natural ingredients to kill fleas, flea eggs, and ticks on contact.
- PROVEN EFFECTIVE: Whether facing an active infestation or applying for routine prevention, our spray is scientifically proven effective against pests but gentle enough to use around the whole family.
- CERTIFIED NATURAL OILS: Each steam-distilled essential oil is selected for its potent pest-fighting properties and is 100% Certified Natural.
- TOTAL HOME DEFENSE: Applies easily on surfaces, indoors and out, including dog bedding, crates, furniture, blankets, upholstery, carpets, outdoor surfaces, and more. Also gentle enough to be applied directly on dogs and puppies 12 weeks or older.
- MADE IN THE USA: Our products are proudly manufactured in the USA with quality domestic and internationally sourced ingredients.

Adams Plus Flea & Tick Spray For Dogs and Cats | Kills Adult Fleas, Flea Eggs, Flea Larvae, Ticks, and Repels Mosquitoes For Up To 2 Weeks | Controls Flea Reinfestation For Up To 2 Months | 16 Oz
Price : $22.47
Features :
- KILLS FLEAS & FLEA EGGS – This highly effective combination of ingredients provides quick relief from biting fleas and continuous killing of flea eggs laid on the animal, breaking the flea life cycle.
- KILLS TICKS – Adams Plus Flea & Tick Spray kills Deer Ticks which may transmit Lyme Disease.
- REPELS MOSQUITOES – A light, even coverage of your pet’s hair or coat will also provide effective repellency of mosquitoes.
- CONVENIENT TO USE – For use on canine companions 10 weeks and older and feline friends 12 weeks and older. This spray is designed with a convenient trigger for easy and even application.
- DUAL ACTION – Dual action kills adult fleas and prevents flea development.
- PROVEN PERFORMANCE – Since 1975, Adams products offer a unique approach to prevention and protection for flea and tick control that you can rely on.
- ADAMS FOR PET, HOME, AND YARD – 5% of fleas live on your pet while the remaining 95% live in your home or yard. Complete your flea and tick control system with Adams products and defend against pests.
- CONTACT US: We value our consumer feedback and questions. Visit our website to contact the Adams customer care team
In Conclusion,
Heartgard is an effective treatment for fleas, ticks, and other parasites. It can be used on puppies as young as 6 weeks of age and can be given to dogs over 6 months old. The medication is taken once a month by mouth or by injection.
The medication works by blocking the absorption of certain amino acids from the blood into your dog’s cells. This causes a change in the way that certain proteins are made inside your dog’s cells, which prevents your dog from being infected with fleas and other parasites.
If you have any questions about Heartgard or its use, please talk with your veterinarian before giving it to your dog.