As a pet parent, navigating the vast array of options for preventing heartworm, fleas, ticks, and intestinal worms in your dog can be confusing. This comprehensive guide from Dog Care Story aims to simplify that choice, presenting common, safe, and effective treatments readily available through your veterinarian or pet supply store. Our goal is to help you select the Best Dog Wormer Flea And Tick Treatment tailored to your furry friend’s needs, ensuring their optimal health and comfort.
Parasite prevention is a cornerstone of responsible pet ownership. Fleas and ticks are not just itchy nuisances; they can transmit diseases, cause skin infections, and lead to anemia. Intestinal worms can cause digestive upset, malnutrition, and even organ damage. Heartworm disease, transmitted by mosquitoes, is particularly dangerous and can be fatal if left untreated. Choosing a combined parasite prevention strategy is essential for your dog’s overall well-being. Regular preventative care can also help mitigate health issues, including some that might manifest as digestive problems. For more information on dealing with gastrointestinal issues, you might find our article on anti diarrhea prescription medicine for dogs helpful.
 Comprehensive guide to dog flea, tick, and worm prevention products
Comprehensive guide to dog flea, tick, and worm prevention products
The overview above summarizes various products, with detailed descriptions provided below. Protection against heartworm, fleas, and ticks is considered necessary for all dogs, alongside regular intestinal worming. While choosing a single product that covers the most parasites is often convenient, we advise developing a more tailored plan by understanding the specifics of each treatment. This list is presented with an emphasis on integrated protection, but always consult your veterinarian for advice specific to your pet’s health and lifestyle. Avoid treating the same parasite twice with different products. Rest assured, most quality flea, heartworm, and worming programs offer comparable value in the long run.
Important Considerations for Parasite Prevention
Before diving into specific products, it’s crucial to understand a few key considerations that influence your choice:
- Tick Control: The prevalence of ticks, especially paralysis ticks, varies significantly by geographic region. If you live in or travel to an area known for ticks, robust tick prevention is non-negotiable. Always consult local veterinarians for region-specific advice on tick control.
- MDR1 Gene Sensitivity: A critical warning for certain breeds: monthly tablets or chews containing ivermectin (often found in over-the-counter products) should never be used in Australian Shepherds, Collies, or Collie cross dogs. These breeds may carry the MDR1 gene mutation, which makes them highly sensitive to ivermectin and other drugs, leading to severe neurological reactions. Always confirm with your vet about breed-specific sensitivities.
- Heartworm Testing: All dogs should be tested for existing heartworm infection before starting any heartworm prevention program, especially if they have missed previous doses. Administering heartworm preventative to a dog already infected can cause severe adverse reactions.
- Life Stage and Health Status: Puppy, adult, senior, pregnant, breeding, or lactating dogs have different safety considerations for many medications. Always check product labels and consult your vet. Dogs with a history of seizures, for instance, may need specific product recommendations. If your dog experiences any adverse reactions or health concerns, particularly digestive issues, it’s vital to seek immediate veterinary advice. Understanding home remedies for dogs can be useful for minor issues, but always prioritize professional veterinary care for serious conditions.
Section 1: All-in-One Solutions for Comprehensive Protection (Heartworm, Fleas, Ticks, Intestinal Worms)
These products offer broad-spectrum protection, simplifying your dog’s parasite prevention routine.
Proheart® SR12 Once a Year Injection
 Proheart SR12 annual heartworm injection for canine parasite prevention
Proheart SR12 annual heartworm injection for canine parasite prevention
Prevents: Heartworm only (briefly effective against hookworm)
Comes as: Annual injection (moxidectin)
- This is a highly popular heartworm prevention choice among many pet owners due to its convenience.
- Provides continuous, guaranteed protection against heartworm for a full year.
- Eliminates the need to remember monthly oral or topical treatments.
- Generally considered safe for dogs who have missed previous prevention doses (though testing is still advised).
- Can be used safely in breeding dogs, during pregnancy, and lactation.
- Veterinary clinics often send reminders when the next injection is due.
While Proheart SR12 offers excellent long-term heartworm control, dogs receiving it still require monthly flea control and intestinal worming tablets every three months. The primary benefit is the peace of mind knowing the most life-threatening parasitic disease is definitively controlled.
How to Use Proheart SR12:
Typically, vets advise starting Proheart at 6 months of age, with subsequent annual injections often coinciding with your dog’s annual vaccinations for convenience. It can be started at any age, and the injection will be due at the same time each year thereafter.
Simparica® Trio
Prevents: Heartworm, Fleas, Ticks (including paralysis ticks), Intestinal worms (except tapeworm)
Comes as: A flavored chew given once every month (sarolaner, moxidectin & pyrantel)
- Combines highly effective flea and tick control with heartworm prevention.
- Also targets roundworms and hookworms, covering most common intestinal worms.
- Does not treat tapeworms, so an additional tapewormer may be required, especially in areas with high tapeworm exposure.
- Convenient oral chew with no restrictions on bathing, swimming, or messy topical application.
- Proven effective against paralysis ticks.
How to use Simparica Trio:
Can be used in puppies from 8 weeks of age and over 1.25kg body weight. Safety has not been evaluated in pregnant, breeding, or lactating dogs.
Nexgard® Spectra
Prevents: Heartworm, Fleas, Ticks (including paralysis ticks), Intestinal worms (except tapeworm)
Comes as: A meaty chew given once every month (afoxolaner & milbemycin)
- A powerful all-in-one chew providing heartworm, flea, and tick prevention.
- Effectively treats and controls most intestinal worms (roundworms, hookworms, whipworms).
- Also treats mange caused by demodex and sarcoptes mites, as well as ear mites.
- Like Simparica Trio, it does not treat tapeworms, necessitating a separate tapeworm treatment if needed.
- Oral administration means no messy residue and no impact from bathing.
- Effective against paralysis ticks.
How to use Nexgard Spectra:
Suitable for puppies from 8 weeks of age and over 2kg body weight. NexGard Spectra can be used in breeding, pregnant, and lactating female dogs. Safety in breeding males has not been specifically evaluated.
Credelio Plus®
Prevents: Fleas, Ticks (including paralysis ticks), Heartworm, Intestinal worms (roundworm, hookworm, whipworm)
Comes as: A meaty chew given once every month (lotilaner, milbemycin)
- Comprehensive oral chew that prevents heartworm disease and provides highly effective flea and tick control.
- Targets common intestinal roundworms, hookworms, and whipworms.
- No restrictions on bathing or mess.
- Effective against paralysis ticks.
How to use Credelio Plus:
Can be used from 8 weeks of age in animals over 1.4 kg. Use with caution in dogs with a history of seizures. Safety has not been evaluated in pregnant, breeding, or lactating dogs.
Comfortis® Plus (previously Panoramis)
 Comfortis Plus (Panoramis) tablets for dog flea, heartworm, and worm control
Comfortis Plus (Panoramis) tablets for dog flea, heartworm, and worm control
Prevents: Heartworm, Fleas, Intestinal worms (except tapeworm)
Comes as: A tablet, given monthly with food (spinosad & milbemycin)
- Provides highly effective flea and heartworm control.
- No restrictions on bathing or messy topical application.
- Generally, vets advise using a tapewormer every 6 months in addition.
- Important: Not recommended for Collies or Australian Shepherds due to potential drug sensitivities.
For pet owners who find giving a tablet difficult, topical alternatives might be considered. If monthly dosing compliance is a concern, an annual Proheart SR-12 injection for heartworm, combined with a separate flea and intestinal wormer, could be a more suitable option.
How to Use Comfortis Plus:
Can be used from 14 weeks of age. There is a serious interaction with off-label doses of ivermectin, so always inform your vet if your dog is on Comfortis Plus and needs treatment for mites. Dogs who have missed prevention and may have heartworm require a blood test before starting. Safety in breeding, pregnancy, and lactation has not been fully established.
Sentinel®
Prevents: Heartworm, Fleas, Intestinal worms (roundworm, hookworm, whipworm, tapeworm)
Comes as: A tablet, given monthly with food (milbemycin, lufenuron & praziquantel)
- Offers broad protection against heartworm, fleas (by sterilizing them), and all major intestinal worms, including tapeworms.
- No restrictions on bathing or messy topical application.
- Safe for use in very young animals.
- Proven safe in pregnancy and lactation.
A potential disadvantage for some owners is the need to administer a tablet monthly, which can be challenging for dogs reluctant to take pills. Also, its method of flea control sterilizes fleas rather than killing them outright, meaning dogs entering heavily flea-infested environments might still encounter live fleas, though their reproductive cycle will be broken.
How to Use Sentinel:
Sentinel is safe for puppies from 6 weeks of age and breeding dogs. Dogs who have missed prevention and may have heartworm require a blood test before starting treatment.
Advocate®
Prevents: Heartworm, Fleas, some intestinal worms (roundworms, hookworms, whipworms), most mites (ear mites, sarcoptic mange, aids in demodectic mange control)
Comes as: A vial of liquid applied to the back of the neck on a monthly basis (moxidectin & imidacloprid)
- Provides rapid flea control and broad-spectrum protection against heartworm and various mites.
- Useful in treating puppies infested with ear mites and dogs exposed to sarcoptic mange (fox mange).
- Also has a label claim to “aid in the control of” demodectic mange.
How to Use Advocate:
Advocate can be used from 7 weeks of age. Animals can be bathed after 48 hours, but frequent bathing may reduce the effectiveness of flea control. Care should be taken during application as the solvent may damage clothing and painted surfaces, and avoid placing it where the animal can lick. Vets often recommend supplementing with intestinal worming tablets every 3 months, as it doesn’t cover tapeworm. Dogs who have missed prevention and may have heartworm require a blood test before starting. Safety in pregnancy has not been definitively established. If you suspect your dog has digestive issues, possibly related to worms, please consult your vet for diagnosis and treatment. For related information, see our article on dog anti diarrhea medication prescription.
Revolution® (Discontinued, now with equivalents Selapro® and Evicto®)
Prevents: Heartworm, Fleas, Intestinal worms (roundworm, hookworm)*, some mites (ear mites, sarcoptic mange)
Comes as: A vial of liquid applied to the back of the neck on a monthly basis (selamectin)
- A quick-drying, less messy spot-on treatment.
- Once fully absorbed, pets can be bathed without loss of effectiveness.
- Effective against heartworm, fleas, and helpful in treating ear mites and sarcoptic mange.
- Often a preferred choice for owners seeking a combined flea and heartworm preventative.
- Safe for very young animals.
- No adverse effects reported when trialed in breeding, pregnant, or lactating dogs.
Update: Revolution was discontinued, but Selapro® and Evicto® are two equivalent products now available, containing the same active ingredient (selamectin). However, these equivalents typically do not include intestinal worming, meaning you will still need a separate intestinal worming treatment. (Original Revolution packs often supplied Canex intestinal all-wormer).
How to Use Revolution (or Selapro/Evicto):
Can be safely applied to puppies from 6 weeks of age. Dogs who have missed prevention and may have heartworm require a blood test before starting. Remember to use a separate intestinal worming treatment if using Selapro or Evicto.
Section 2: Dedicated Flea and Tick Treatments (Non-Heartworm/Intestinal Worm)
These products are typically used in conjunction with a separate heartworm preventative and intestinal worming program. Effective flea control in a household requires treating all dogs and cats living together. Systemic (oral tablet) treatments are generally considered more environmentally friendly than topical (spot-on) options. Warning: Never use products formulated for dogs on cats, rabbits, or ferrets, as they can be highly toxic.
Simparica®
 Simparica chewable tablet for comprehensive flea, mite, and tick prevention in dogs
Simparica chewable tablet for comprehensive flea, mite, and tick prevention in dogs
Prevents: Fleas, Mites (demodectic, sarcoptic, ear mites), Ticks (including paralysis ticks)
Comes as: A tablet given once every month (sarolaner)
- Offers highly effective control against fleas, various mites, and ticks.
- Oral treatment, so no restrictions on bathing, swimming, or messy topical application.
- Registered for the treatment of demodectic mange, sarcoptic mange, and ear mites.
- Effective against paralysis ticks.
How to use Simparica:
Can be used from 8 weeks of age in puppies and dogs over 1.3kg body weight. Safety has not been evaluated in breeding, pregnant, or lactating dogs.
Bravecto®
Prevents: Fleas, Ticks (including paralysis ticks)
Bravecto (fluralaner) comes in two forms:
- A chewable tablet given once every 3 months with food.
- A spot-on pipette given every 6 months.
- Provides very long-acting flea control.
- Controls paralysis ticks for 4 months (chew) or 6 months (spot-on).
- Formulated to treat dogs up to 56kg.
- The chewable tablet, but not the spot-on, also treats demodectic and sarcoptic mange and ear mites.
- Considered safe in breeding, pregnant, and lactating animals.
How to use Bravecto:
Can be used from 8 weeks of age in dogs from 2kg body weight. For young puppies, accurate dosing for such a long-acting product might be challenging due to rapid weight changes; therefore, starting it at or after 6 months of age is often recommended. Always administer with a meal.
Advantage®
Prevents: Fleas
Comes as: A vial of liquid applied to the back of the neck on a monthly basis (imidacloprid)
- Provides fast and effective flea control, with a long history of reliable performance (almost 20 years).
- Available in a wide dose range, suitable for multi-animal households.
- Considered safe in pregnancy and lactation.
How to Use Advantage:
Can be used from weaning. For younger puppies, treating the mother should also offer protection. Animals can be bathed after 48 hours, but frequent bathing may reduce flea control effectiveness. The solvent may damage clothing and painted surfaces, so apply with care and avoid placing it where the animal can lick. Some dogs may experience permanent hair color change at the application site.
 Dog's coat discoloration at the application site of a topical flea treatment like Advantage
Dog's coat discoloration at the application site of a topical flea treatment like Advantage
Nexgard®
Prevents: Fleas, Ticks (including paralysis ticks)
Comes as: A meaty chew given once every month (afoxolaner)
- Offers highly effective flea control.
- No restrictions on bathing, swimming, or messy topical application.
- Effective against paralysis ticks.
- Important: Use with caution in dogs with a history of seizures.
How to use Nexgard:
Can be used from 8 weeks of age in animals over 2kg body weight. NexGard can be used in breeding, pregnant, and lactating female dogs. Safety in breeding males has not been specifically evaluated.
Credelio®
Prevents: Fleas, Ticks (including paralysis ticks)
Comes as: A meaty chew given once every month (lotilaner)
- Provides highly effective flea control.
- No restrictions on bathing or messy application.
- Effective against paralysis ticks.
- Important: Use with caution in dogs with a history of seizures.
How to use Credelio:
Can be used from 8 weeks of age in animals over 1.3 kg body weight. Safety has not been evaluated in pregnant, breeding, or lactating dogs.
Seresto®
Prevents: Fleas & Ticks (including paralysis ticks)
Comes as: An insecticide-impregnated collar (imidacloprid & flumethrin)
- Offers extended flea control for up to 8 months and tick control for up to 4 months.
- A convenient, long-lasting option for continuous protection.
How to use Seresto:
Can be used from 7 weeks of age. Safety in pregnancy has not been definitively established.
Advantix®
Prevents: Fleas & Ticks (including paralysis ticks)
Comes as: A vial of liquid applied to the back of the neck on a monthly basis (imidacloprid & permethrin)
- Provides flea control for 1 month and tick prevention for 2 weeks.
- May offer a unique repellent effect against flies and mosquitoes.
- Safe for use on pregnant and lactating bitches.
- Critical Warning: Very toxic to cats. Exercise extreme caution in multi-pet households to prevent cats from coming into contact with treated dogs.
How to use Advantix:
Can be used from 7 weeks of age.
Section 3: Dedicated Intestinal Wormers
Dogs are susceptible to four main types of intestinal worms: roundworm, hookworm, whipworm, and tapeworm. Effective worming involves using products with two or more active ingredients, including at least praziquantel (which targets tapeworms) plus another broad-spectrum anthelmintic. Always ensure all adult dogs in a household are wormed simultaneously.
The general worming schedule is as follows: every two weeks until 12 weeks of age, then every month until 6 months old, then every three months for life. In areas where hydatid tapeworm is prevalent (often rural regions), more frequent worming (every 6 weeks) may be necessary. If your dog is experiencing symptoms like diarrhea, poor appetite, or weight loss, intestinal worms could be a culprit. For specific concerns about digestive health, explore resources on prescription medication for dogs with diarrhea.
Milpro®, Milbemax® etc.
 Milbemax or Milpro intestinal worming tablet for dogs, containing milbemycin and praziquantel
Milbemax or Milpro intestinal worming tablet for dogs, containing milbemycin and praziquantel
Prevents: Intestinal worms (roundworm, hookworm, whipworm, tapeworm)
Comes as: Tablet (milbemycin & praziquantel)
- Small, palatable tablets that are often easily hidden in food.
- A single tablet can treat dogs up to 25kg.
- Highly effective against all major intestinal worms.
- If given monthly, some formulations can also offer heartworm control (though this requires specific dosing and prior heartworm testing).
How to Use Milpro/Milbemax:
Follow the recommended worming schedule outlined above. Do not use in dogs who may have heartworm without a prior blood test. Generally considered safe in pregnant bitches.
Drontal®
Prevents: Intestinal worms (roundworm, hookworm, whipworm, tapeworm)
Comes as: Tablet, drops, flavored chews (various formulations with multiple active ingredients)
- A well-known and original brand-name all-wormer.
- Offers highly effective control against all four major intestinal worms.
- Many generic and similar formulations are available on the market.
How to Use Drontal:
Follow the recommended worming schedule outlined above. Generally considered safe in pregnancy.
Conclusion
Choosing the best dog wormer flea and tick treatment is a vital decision for your pet’s health and happiness. With a wide range of effective products available, you can select a prevention plan that fits your dog’s specific needs, your lifestyle, and your budget. Whether you opt for an all-in-one monthly chew, an annual injection, or a combination of specialized treatments, consistency is key to effective parasite control.
Always remember that this guide provides general information. Every dog is unique, and factors such as age, weight, breed sensitivities, health history, and geographical location play a significant role in determining the most appropriate preventative measures. Therefore, it is paramount to consult your veterinarian to establish a tailored parasite prevention program for your dog. Your vet can provide expert advice and ensure your beloved companion remains healthy and protected year-round. For further information on related health topics, explore other articles on our Dog Care Story website.

