Experienced and professional animal trainer provide their insights in answering this question :
A. It is completely safe to switch products. Both brands have been shown to be very effective in preventing heart worm.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

Just one IVERHART PLUS® (ivermectin/pyrantel) Flavored Chewables given monthly protects your dog from heartworm disease and treats and controls roundworms and hookworms. This flavored chewable is tasty and safe even in puppies as young as 6 weeks.
Will switching heartworm preventatives be harmful to my pet? Pets can switch from one heartworm medication to another only with their veterinarian`s approval, and following a negative heartworm test.
This generic medication contains the same ingredient at the same dose rate as the Heartgard brand of Heartworm prevention medication, so it has just the same effectiveness, but costs a fraction of the price.
Choosing between Iverhart Max and Heartgard

Iverhart Max (not Iverhart Plus Chewables, which are no longer available) covers tapeworm, which is transmitted by fleas, and Heartgard does not, so if fleas are especially prevalent in your area, Iverhart Max might be the better choice for you.

Self-limiting adverse reactions including lethargy, limpness, salivation, shaking, diarrhea, decreased appetite, licking lips, and belching were reported between 20 minutes and 72 hours following treatment in a field study with Iverhart Max Chewable Tablets.
They are also both safe for use in puppies. Iverhart Max can be given to puppies from an age of 8 weeks, while Iverhart Plus is safe for puppies 6 weeks old and up. One of the most important similarities between these two products is that they both protect against some of the same dangerous parasites.
When a dose of heartworm prevention is given to a dog (either topically or orally) it acts as a dewormer and kills off any of the possible larval stages that mosquitoes have transmitted to dogs. The medication is usually in and out of the dog`s system within 24 hours and does not stay in the dog`s body for 30 days.
Nervous system changes may occur with large overdoses. Signs of an overdose include drooling, incoordination, weakness, tremors, disorientation, lethargy, dilated pupils, blindness, coma, and death. Other symptoms may include vomiting, diarrhea, low heart rate, body temperature changes and abnormal behavior.
Although there are fewer mosquitoes in the winter, there is still a risk that your pet could get heartworms if you stop giving heartworm prevention medication during this season. That`s one reason veterinarians strongly recommend pets receive heartworm prevention medication year-round.
What is the difference between Iverhart Plus and Iverhart Max? Both Iverharts contain Pyrantel and Ivermectin that prevent and kill hookworms, roundworms, and controls heartworms. Iverhart Max contains a third ingredient, Praziquantel, that is fatal for a fourth parasite – tapeworms.
What are the side effects of Iverhart Plus for dogs of which you should be aware? Iverhart Plus`s most common adverse reactions reported are vomiting, lethargy, staggering, mydriasis, convulsions, hypersalivation, decreased appetite, and diarrhea.
Heartgard (ivermectin) has been discontinued. Please talk to your veterinarian about Heartgard PLUS Chewables for Dogs (Ivermectin and Pyrantel) or other heartworm preventatives.
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. However, a dog with the mutation who ingests the drug can have a severe, life-threatening reaction called ivermectin toxicity.
While ivermectin is prescribed for dogs, toxicity can occur when dogs ingest more ivermectin than they should. This can occur if a dog is administered a dosage that is intended for larger animals, such as horses, or if a dosage for a greater weight/size of dog is inadvertently administered to a smaller dog.
Of course, these dogs can be given heartworm preventatives that do not utilize ivermectin (Revolution [selamectin] and Advantage multi [moxidectin] are both topical, so they treat fleas as well as prevent heartworm disease). Both of these medications are fairly new and will need to be purchased from your veterinarian.
Ivermectin is most commonly used as a heartworm preventive in dogs and cats. It also used `off label` or `extra-label` for treating a variety of internal and external parasites.
If you forget a month of preventative, make sure to give the next 2 doses on time to “catch up” for that missed month. If you miss several months in a row, you should give your vet a call for advice on when to plan for the next heartworm test and how to get started back on preventatives.
But now the effectiveness of the most popular drug used to fight heartworm, Heartgard Plus, is being called into question. In a lawsuit, a former Heartgard employee claims the company had evidence that the parasites developed resistance to the product`s active ingredients and as a result, some pets got sick.
Dogs with heartworm disease can live high-quality lives as long as they are given appropriate care. After completing treatment and following your veterinarian`s recommenda- tions on heartworm disease testing and prevention, the chances of any long-term effects are very low.
Your senior dog needs a year-round medicine to prevent intestinal parasites, which are found in your dog`s feces and can be transmitted to humans, so talk to your veterinarian about how to keep everyone in your home protected. Keep your senior dog`s heartworm preventive as well as flea and tick control updated.
Interruptions in heartworm treatment are never ideal, as delays can allow heartworm infection to progress. Nevertheless, they are a fact of practice life. At this point, your priority is to restart treatment as soon as possible.
Even if heartworm infection is treated, we all know it does serious, permanent damage to the body. This in-depth look at that damage will renew your commitment to consistent prevention recommendations for your veterinary patients.
There is no treatment for the poisoning; supportive measures are the only care available (though in cases of oral administration induction of vomiting and administration of activated charcoal often occur ). Early and aggressive supportive care allows for a good prognosis for recovery.
A veterinarian uses blood tests to check a dog for heartworms. An antigen test detects specific heartworm proteins, called antigens, which are released by adult female heartworms into the dog`s bloodstream. In most cases, antigen tests can accurately detect infections with one or more adult female heartworms.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. Whenever I take my dog on walks he always barks at people and others dogs in my neighborhood. What should I do to resolve the problem
ANSWER : A. The very first thing to do is to make sure your dog is getting sufficient physical and mental exercise every day. A tired dog is a good, happy dog and one who is less likely to bark from boredom or frustration. Depending on his breed, age, and health, your dog may require several long walks as well as a good game of chasing the ball and playing with some interactive toys.

Figure out what he gets out of barking and remove it. Don’t give your dog the opportunity to continue the barking behavior.

Ignore your dog’s barking for as long as it takes him to stop. That means don’t give him attention at all while he’s barking. Your attention only rewards him for being noisy. Don’t talk to, don’t touch, or even look at him. When he finally quiets, even to take a breath, reward him with a treat. To be successful with this method, you must wait as long as it takes for him to stop barking. Yelling at him is the equivalent of barking with him.

Get your dog accustomed to whatever causes him to bark. Start with whatever makes him bark at a distance. It must be far enough away that he doesn’t bark when he sees it. Feed him lots of good treats. Move the stimulus a little closer (perhaps as little as a few inches or a few feet to start) and feed treats. If the stimulus moves out of sight, stop giving your dog treats. You want your dog to learn that the appearance of the stimulus leads to good things.

Teach your dog the ‘quiet’ command. Oddly, the first step is to teach your dog to bark on command. Give your dog the command to “speak,” wait for him to bark two or three times, and then stick a tasty treat in front of his nose. When he stops barking to sniff the treat, praise him and give him the treat. Repeat until he starts barking as soon as you say “speak.” Once your dog can reliably bark on command, teach him the “quiet” command. In a calm environment with no distractions, tell him to “speak.” When he starts barking, say “quiet” and stick a treat in front of his nose. Praise him for being quiet and give him the treat.

As in all training, always end training on a good note, even if it is just for obeying something very simple, like the ‘sit’ command. If you dog regresses in training, go back to the last thing he did successfully and reinforce that before moving on again. Keep sessions short, 15-20 minutes max, and do this several times a day.

Q. What brand of dog food should I feed my dog? She’s a husky mix and about 45 lbs. She’s almost 2 years old.
ANSWER : A. I would recommend Natural Balance at your local Petco store. Call the store and ask if they have a Natural Balance Brand rep who comes to the store and see when they come. Make sure the brand rep brings free samples with them. Normally they bring samples of the different flavors to the store and you should ask for some to try to see what your dog likes best. Offer the dog the different kibble and see which they prefer by holding them out in your hands and switch out the flavors. My dog prefered the Salmon based Natural Balance Synergy bag the best from all the flavors. I also found out he doesn’t care for the Bison Natural Balance even though a lot of dogs love it. The Petco may have free samples already so ask if they do. The pet store associates should be able to also assist you in finding the right food for you. The reason you want to go with a high quality high protein food vs the cheaper brands because they are grain free, no by products, and no corn. The cheaper brands have corn in it as the main ingredient and by product which is also very bad. When our dogs are forced to eat the cheaper brands they have to eat more to get the energy they need from the food resulting in more bowel movements and without the proper nutrients this can hurt their health later in life. The higher quality brands will be more cost per bag but you will be buying less because the dog eats less so you will be saving money that way and it comes out about even in the long run. Petco has a great Rewards Program so make sure to sign up and ask about the details on it. Every $100 you spend you get $5 in your email with the Pet Pals Reward Program.

Q. How do I determine how much my overweight pet should weigh?
ANSWER : A. There are many tools to determine overweight and obesity levels in pets. A new tool, morphometric measurements and body fat index, are available to accurately determine a pet’s ideal weight; this will allow an accurate determination of the amount of food a pet should receive to achieve weight loss. Feeding the correct amount will lead to greater weight loss success.

There are many weight loss food options to help pets reach their ideal weight. Your veterinarian can help make a ideal weight recommendation. Here are some tips to help your dog lose weight in a healthy and safe way:

1. Diet: Providing a healthy and well balanced diet is essential to your pet’s overall health. Finding the right food for your dog can be a challenging process. For those overweight animals many commercial dog companies offer weight loss diets, but it is important to evaluate food labels for adequate nutritional content.

You want to ensure you are not missing other essential vitamin or mineral content. Volume of food is also important and the amount of food that works for one breed of dog may not be the same for another breed of dog. Portion control as opposed to free-choice feeding can help your dog to drop a few unnecessary pounds.

There are also prescription weight loss foods designed by veterinary nutritionists, such as Hill’s r/d (http://bit.ly/1AoENSd). Some pet owners find that home cooking is the best option for helping to provide a well-balanced and realistic diet plan. There are websites such as balanceit.com that offers recipes to fit your dog’s specific needs. Consulting with your veterinarian or a veterinary nutritionist to find the appropriate diet is a great way to help your dog be as healthy as possible.

2. Exercise: Another great tactic for weight loss for your dog is exercise. Whether this is through running, walking or playing with a favorite toy all of these are wonderful types of exercise to help keep your dog at a lean and healthy weight.

For those pet owners with busy schedules utilizing professional dog walking services or playtime through dog daycare services is another option. It has been shown that those pet owners that exercise regularly with their pets generally live a healthier lifestyle.

3. Physical therapy: As animals age pet owners offer encounter their favorite canine having more difficulty walking and have a dwindling desire to play with toys. Physical therapy, specifically hydrotherapy is a wonderful way to help older and arthritic animals gain more mobility and lose weight. Hydrotherapy has been proven to have several therapeutic effects on the body including, muscle strengthening, relief of swelling, decreased joint pain, less stiffness in limbs, improved circulation, weight loss, and increased tissue healing to name a few. For more information on the benefits of hydrotherapy:
http://bit.ly/1w1qqoy

4. Veterinary visit and blood work: Weight gain can also be related to underlying health concerns such as hypothyroidism or other endocrine disorders. Scheduling a veterinary evaluation and routine blood work can be another important component in increasing the longevity of your dog’s life. Conditions such as hypothyroidism that predispose dogs to gain weight can be treated with a daily medication to improve hormonal balance. If feel that your dog is unnecessarily overweight there can be an underlying health condition that needs to be addressed.

5. Healthy treats: Pet owners love the chance to reward their favorite canine companion with treats and most dogs jump at the chance to consume these delicious products. The problem is many treats, which can include commercial dog treats or table scrapes can add many unnecessary calories to your dog’s daily intake. Reading labels and making note of the calories in these treats is an important component of understanding your dog’s overall health. Treats should not exceed more than 10 percent of your pet’s daily calories. There are healthier treats that can be offered to your pet to keep calories lower yet provide a fuller sensation. A pet owner can add steamed or pureed vegetables, such as carrots, green beans or sweet potato to add more fiber and thus a fuller feeling for your dog.

Q. What can I do to stop my dog from barking at people and front doors?
ANSWER : A. Ignore your dog’s barking for as long as it takes him to stop. This means don’t give him any attention at all while he’s barking. Your attention only rewards him for being noisy. Don’t talk to him, don’t touch him, and don’t even look at him. When he finally quiets down, even to take a breath, reward him with a treat. To be successful with this method, you must wait as long as it takes for him to stop barking. If he barks for an hour and you finally get so frustrated that you yell at him to be quiet, the next time he’ll probably bark for an hour and a half. Dogs learns that if they bark long enough you’ll give them attention.

Teach your dog the ‘quiet’ command. It may sound nonsensical, but the first step is to teach your dog to bark on command. Give your dog the command to “speak,” wait for him to bark two or three times, and then stick a tasty treat in front of his nose. When he stops barking to sniff the treat, praise him and give him the treat. Repeat until he starts barking as soon as you say “speak.” Once your dog can reliably bark on command, teach him the “quiet” command. In a calm environment with no distractions, tell him to “speak.” When he starts barking, say “quiet” and stick a treat in front of his nose. Praise him for being quiet and give him the treat.

When your dog starts barking, ask him to do something that’s incompatible with barking. Teach your dog to react to barking stimuli with something that inhibits him from barking, such as lying down in his bed.

Make sure your dog is getting sufficient physical and mental exercise every day. A tired dog is a good dog and one who is less likely to bark from boredom or frustration. Depending on his breed, age, and health, your dog may require several long walks as well as a good game of fetch and playing with interactive toys.

Q. My dogs have been taking Heartgard Plus for years. Would it be dangerous to switch to Iverhart Plus? Is the generic brand as effective?
ANSWER : A. It is completely safe to switch products. Both brands have been shown to be very effective in preventing heart worm.

Q. My cocker spaniel is 9 years old. He has involuntary bowel movements (little drops) very frequently, especially when he is asleep.
ANSWER : A. Is your dog on a senior dog food? I would get your dog on a high quality high protien dog food. Ask a pet store assosicate or your regular vet for a food recommendation. When you buy a better food the dog will have to eat less to get the same amount of energy from the food. The dog has to eat more of the cheaper foods to get the energy it needs from it. Meaning more poop and buying more food. So the cost really evens out. So the lessen your dogs bowel movements get on a better senior dog food. Next talk to your vet they may have a recommendation. If you switch dogs do it slowly by mixing the foods. Start with 10% new 90% old mixed for at least a week until you have switched to 100% new 0% old. Senior foods have more fiber to help with bowel movements. Take the dog outside to go potty more frequently, right before bed time.

Read Full Q/A … : Symptoms Questions & Answers

Q. Rescued a dog almost two weeks ago, and now that her kennel cough is gone her personality shines!! No previous training, how should I start?
ANSWER : A. POST FOUR:

After your dog is familiar with the behavior you lured from scratch, and taught to your dog, you can start to use the “no-reward marker” I talked about. What you do is ask the dog to perform the behavior, and if the dog does not perform the behavior, you simply say your no-reward marker (choose one: eh-eh, hey, uh-oh, oops) show them the treat, put it behind your back, and BRIEFLY ignore your dog. Just turn your back for a second or two, before turning back to your dog and saying, “let’s try that again.” When you’re ready to start over with your dog, make sure you move around. If you are repeating the same cue while in the same position, while your dog is in the same position, you are likely to receive the same results. The more you move around, and start fresh, the better your chances are of having your dog listen to your cue the second time around. BIG rewards when they dog it successfully! Lots of praise and treats.

My no-reward marker is “hey.” When my dog does something wrong I say, “hey” and she immediately understands that she needs to offer a different behavior. This is clear to her. I don’t have to say it in a mean way, I simply say, “hey” in a normal tone of voice and she understands what the word means.

Once you’ve built up that connection and communication with your new dog, you can work on all kinds of fun behaviors! I personally enjoy the more zen-like behaviors: https://www.youtube.com/watch?v=ruy9UMcuGh8

I like to teach my dog fun tricks that offer her a “job” to do of sorts like object retrieval: https://www.youtube.com/watch?v=I4iertZSva8

(object retrieval training completed; what it looks like: https://www.youtube.com/watch?v=jx0Dml28FGY)

Scent-games are fun too! Very confidence building. Hide a REALLY smelly treat in a box, and place that box in a line of boxes. Let your dog go in the room while saying something like “search!” or “find it!” and watch them hunt for that smelly treat! Lots of rewards when they find it!

Q. How do I teach my dog to sit still enough and not move his head while I clip on the gentle leader?
ANSWER : A. Most dogs HATE the gentle leader, and it’s not at all surprising. Would you want something foreign on your face? It’s an uncomfortable training tool, and no dog enjoys wearing it. If you are looking to have your dog behave better on-leash, you should consider tossing out that gentle leader, and using a front hooking harness like the Sensible http://www.softouchconcepts.com/index.php/product-53/sense-ible-harness, or the Sensation http://www.softouchconcepts.com/index.php/product-53/sense-ation-harness harness. These harnesses will eliminate the pulling power of your dog, and put you in control in a positive, and gentle way. Any time your dog pulls, he is redirected until he is facing you. You can practically walk your dog with your pinky.

I dislike the gentle leader because it can cause neck injuries in an avid puller/lunger. You also can’t ever hook a long-lead to the gentle leader and allow your dog to run around because it would break his neck. Another thing I dislike about it, is it discourages sniffing the ground during walks. When your dog attempts to sniff, and the leash is short, his nose is redirected upwards. When you trip on the leash, the head is jerked around and the nose is directed upwards. Sniffing during walks is extremely important. Sniffing = mental stimulation, which will tire your dog out more during your walks. The more your dog lags, or forges, the less he can sniff the ground, and the more frustrated he becomes.

If you’re dead set on using the head halti.. you should be using treats to hold his attention. Place the head halti on the floor, reward him for sniffing it, pick it up, treat him, put it near his face, treat him, lure his nose through the loop, lots of treats, take the head halti off, more treats, lure his nose through again, more treats. Take baby steps going forwards AND backwards so the “game” of getting the halti on isn’t always getting more difficult.