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Pet Size

Don't know your pet's weight?

If you can't get them on the scale, try this super simple method:

  1. Weigh yourself.
  2. Weigh yourself holding your pet.
  3. Subtract the two numbers to get their weight.

Too heavy to hold? Your vet will weigh them if you ask (or may already have it on file if you call).


No Prescription Required

  • Description

    Valuheart is an OTC heartworm prevention for dogs available without a prescription. It is given to pets once a month and the active ingredient in the medication - Ivermectin - works to kill any worm microfilariae that are in their developmental stage in muscle and fatty tissue. Monthly dosing with Valuheart for dogs will keep your dog protected from heartworm infections at all times, and this is a nice reassurance for dog owners who are committed to their pet's health. Buy Valuheart from World Pet Express and get the best price on heartworm medication.

    What is Heartworm?

    Heartworm is a parasitic infection that affects dogs, cats, and other mammals. It is transmitted through mosquito bites, and the larvae migrate to the heart and lungs, causing serious damage. If left untreated, a heartworm can be fatal, but it can be prevented with regular medication and mosquito control measures.


    Valuheart tablets are packaged in differing dosage strengths based on the dog's weight. Choose from the 3 tablet sizes for up to 10kg (22 lbs), 11-20kg (23-44lbs), or 21 to 40kg (45-88lbs) based on your dog's approximate weight.

    Give the dog 1 tablet per month, at approximately the same time each month.

    For dogs over 88kg, you will give one Valuheart yellow (21-40kg) tablet plus half a table for every additional 20kg of body weight.


    The active ingredient in Valuheart heartworm tablets is Ivermectin.


    For dogs aged 6 weeks and up.

    Medication is only for use for heartworm prevention. For multi-spectrum anthelmintic parasiticide, you will need to use a different product.

    Medication is safe for pregnant or lactating dogs, but it is best to discuss its use with a veterinarian.

    Do not exceed proper dosage strength and never give your dog more than one heartworm preventative for dogs a month.

    Keep Valuheart for dogs in a cool, dry place, and be aware of the medication expiry date.


    There are no established drug interaction risks between Valuheart for dogs tablets and other OTC or Rx medications that a dog might be taking, but it may be best to speak with a veterinarian and let them know of all medications your dog is currently taking before proceeding to buy Valuheart online.

    Side Effects

    Side effects from using Valuheart are not common, but some dogs may experience gastrointestinal upset or be lethargic in days following taking the tablet. If side effects are seen it may be best to stop use and meet with a veterinarian again to discuss heartworm prevention medication alternatives.

    Product Code : 13417