PathPathPathcloseGroup 8send-email-2common-file-horizontal-imagetwitterlock-2cogIcon / HealthCombined Shape
PathPathPathcloseGroup 8send-email-2common-file-horizontal-imagetwitterlock-2cogIcon / HealthCombined Shape

Capstar Tablets

Capstar tablets are used to treat flea infestations. They are fast acting and start killing fleas within 15 minutes. The active ingredient is Nitenpyram. Capstar Tablets are oral tablets.

Dosage guide

One 11mg tablet for Cats and Dogs weighing between 0.5kg to 11kg

One 57mg tablet for Dogs weighing between 11.1kg to 57kg

Two 57mg tablets for Dogs weighing over 57kg

Loading data for Product options...
Order within19h54m16s

to receive your order Thursday 7th July

More Information

  • Effective for cats and dogs
  • Treats flea and tick infestations
  • Fast acting
  • Genuine medication
  • All medicines sourced in the UK
  • help status icon

    Lowest prices online

    No hidden fees

  • help status icon

    Free Tracked Delivery

    On orders over £29.99

  • help status icon

    Accredited Retailer

    Approved by the VMD

What are Capstar Tablets?

Capstar Tablets are an effective flea treatment suitable for both cats and dogs. Capstar Tablets get to work to begin killing fleas in only 15 minutes and within 24 hours aims to have killed all adult fleas on your pet. 

It’s recommended to treat your home at the same time as treating your pet, as Capstar Tablets do not kill eggs and larvae that may have already been spread. Try an approved household flea spray to ensure you eliminate the infestation fully. Capstar Tablets also don’t work on ticks. For ticks or other parasites, you might need an additional or alternative treatment.

The strength and dose of the tablets you require will depend on the size of your animal, with different options for small dogs and cats, and large dogs. The 11mg option is suitable for cats and dogs weighing between 0.5kg and 11kg, while the 57mg option is suitable for dogs weighing over 11kg.

How does Capstar Tablets work?

The active ingredient in Capstar Tablets is Nitenpyram, which remains active in the blood of your pet. Once the fleas bite and feed from your animal, the Nitenpyram attacks the parasite’s nervous system and causes paralysis and then death.

The active ingredient works quickly to begin killing fleas within 15 minutes and is a highly effective parasiticide. Within six hours, up to 90 percent of adult fleas will be dead, with the remaining ones usually killed within 24 hours. However it’s important to note that Capstar Tablets don’t kill eggs and larvae so a dual treatment for your pet and home is recommended.

Instructions for Capstar Tablets

When you receive the medication, it’s important to read and understand the dosage instructions. The strength and dose of the medication will depend on the size of your pet.

Always use medications as directed by your vet. Capstar Tablets are safe to be used every day until you get rid of all the fleas, as nitenpyram doesn’t stay in your pet’s body for too long. Capstar Tablets are also safe puppies and kittens (as long as they weigh at least 1kg) and for nursing or pregnant cats and dogs.

How to order Capstar Tablets

Capstar Tablets belongs to the AVM-GSL classification of veterinary medicines. These types of medicines do not require a prescription and there are no other legal restrictions regarding their supply (they’re also known as ‘over-the-counter’ medicines). However, a responsible approach to the supply of these medicines is still expected so all orders will be checked by a pharmacist or vet before leaving our pharmacy.

Because a prescription is not required, you can order this medicine by adding the required option to your basket and then checking out and completing the payment. Provided that your order is deemed suitable by our vet or pharmacist, it will be dispatched from our pharmacy to your chosen delivery method.

We offer a range of delivery methods with next day delivery available so you can have your order with you quickly and discreetly.


Choose the product and amount from our website.


Carefully read the product description.


Add to your cart.


Your pets medicine will arrive by post.

Learn More
VMD's Product Information Database
  • help status icon

    Quick & Easy

    Simply upload your prescription and receive it the very next day.

  • help status icon

    Checked by Vets

    All orders are double checked by our team of vets.

  • help status icon

    Confidential Service

    Your information is secure in our state of the art secured servers.

  • help status icon

    UK Medication

    Dispensed by a leading registered UK pharmacy.