Shipping Update

We are now seeing improvements in our shipping times. However, things are not yet back to normal and there are still some delays occurring. We will provide updates as the situation changes.

Our normal shipping time averages 1 - 2 weeks. Due to the pandemic, shipments may sometimes take an additional 2 – 4 weeks to arrive, depending on the source country of your order. Shipments from the United Kingdom and Canada are generally quicker than from other countries.

Please note that these times are averages and individual shipping times will vary. We highly recommend that you place your order at least 2 – 4 weeks or more ahead of your normal reorder time to avoid running out of your medication.

We offer a shipping guarantee when you place an order with us. If your order does not arrive within 6 weeks from the date it was shipped, we will re-ship your order to you at no additional cost.

Call Center

Our call center hours of operation are 6:00 am – 9:00 pm Central Time on Monday to Friday, and 7:00 am – 7:00 pm Central Time on Saturday and Sunday.

If you are experiencing increased hold times or are calling outside of these hours, please leave us a message or send us an email and we will get back to you as soon as we can. Due to increased demand on telephone networks worldwide, you may experience some intermittent connection problems. If this happens our agents will call you back.

Our Commitment

If you have any questions about any changes in our service please do not hesitate to contact us. Our staff are working tirelessly to ensure the timely fulfillment and delivery of all orders. The health and safety of our customers and staff is our highest priority and we remain committed to providing service at the highest level.

We appreciate your business and thank you for your continued support.

Management and Staff
North Drugstore

Buy Heartgard from Canadian & International Pharmacies

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Heartgard (Ivermectin/Pyrantel Pamoate)

and/or alternatives
Brand Name Options

Low Price Guarantee

Delivery Guarantee

30 Day Returns

Shipping is $10.00 per order. All prices are in USD. Average shipping time is 2 weeks.
Full information about Heartgard

General Information On Heartgard

The generic name of Heartgard is Ivermectin, and it is a broad-spectrum antiparasitic avermectin drug. Heartgard is prescribed to dogs and cats for the treatment of certain parasitic roundworm infections. Ivermectin works by first paralyzing the parasites and then killing them. It needs to be administered orally and is available in the form of tablets. You can buy Heartgard online or from any pet pharmacy if it has been prescribed by a vet. The medication halts the tissue formation stage in a heartworm or Dirofilaria Immitis larva within 30 days after the infection has surfaced.

Side effects of Heartgard

The side effects of this drug are different for both dogs and cats. Some of the most common side effects in dogs include dilated pupils, tremors, and loss of weight. A sudden loss of weight can even lead to death. Side effects of Heartgard in cats include loss of appetite, agitation, staggering, tremors, dilated pupils, disorientation, and even permanent blindness.

Some of the other symptoms or side effects of Heartgard seen in dogs include laziness and sluggish behavior, prolonged sleep, excessive crying or whining, loss of interest in activities including going out for walks, severe cases of vomiting and diarrhea, and mild to severe seizures or convulsions.


There are certain precautions that are necessary while using Heartgard. You need to ensure that you only buy Heartgard after checking the expiry date on the label since an expired drug can cause severe complications. Heartgard administration can also lead to side effects that will dehydrate your dog and as such, you need to ensure that it is given enough liquids and water. If your dog is allergic to any ingredient in Heartgard, consult your vet before you start administering the doses. You need to ensure that you maintain your pet’s hygiene, as well as your own cleanliness, because humans can contract hookworm, roundworm, and tapeworm infections from dogs and other animals.

Heartgard Dosage

Heartgard is available in the form of tablets and chewables. Heartgard Plus chewables are available in three different packs that are to be used according to the weight of the dog or cat. Heartgard blue is for dogs and cats weighing less than 25lbs, the green pack is for dogs weighing between 26 and 50 lbs, and the red pack is for dogs weighing between 51 and 100 lbs. The standard or prescribed course is one Heartgard chewable or tablet per month. The dosage strength varies according to the weight of the dog. The dose for dogs weighing 25 lbs or less is Ivermectin 68 mcg and Pyrantel 57 mg, the dose for dogs between 26 and 50 lbs is Ivermectin 136 mcg and Pyrantel 114 mg, and for dogs weighing between 51-100 lbs, the dosage is Ivermectin 272 mcg and Pyrantel 227 mg. Heartgard should be chewed and not swallowed whole.


Heartgard is not known to have any interactions with other pet drugs. However, inform your vet if you are giving your dog or cat any other medications before you buy Heartgard to prevent complications.

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IMPORTANT DISCLAIMER: All medical content is supplied by a third party company who is independent from this web site. As such, this web site can not guarantee the reliability, accuracy, and /or medical efficacy of the information provided. In all circumstances, you should seek the advice of a health professional pertaining to drug, treatment and/or medical condition advice. Note that not all products are shipped by our contracted Canadian pharmacy. This website contracts with dispensaries around the world that ship products directly to our customers. Some of the jurisdiction include but are not limited to United Kingdom, Europe, Turkey, India, Canada, Vanuatu, Mauritius, and USA. The items within your order may be shipped from any one of these jurisdiction depending on the availability and cost of the products at the time you place your order. The products are sourced from these countries as well as others. Please note that the product appearance may vary from actual product received depending on availability.