Free standard delivery over £50

Unbranded, secure packaging guaranteed

5% off your first order

When you sign up

Registered Veterinary Retailer

Genuine pet medicine

NexGard Spectra Chewable for Dogs
From Price range: £17.61 through £295.60

NexGard Spectra Chewable for Dogs

From Price range: £17.61 through £295.60

Palatable Chewable Tablet

NexGard SPECTRA is a vet-approved chewable tablet for dogs, protecting against fleas, ticks, and worms in a single monthly dose.

  • Dual action formula
  • Tasty beef-flavoured
  • Easy to administer

It’s also prescribed monthly to help prevent lungworm, heartworm and eyeworm.

Pack of 3: Contains 3 tablets. A 3-month supply for one dog.

Pack of 10 x 3: 30 tablets. For multi-dog households or long-term veterinary stock.

Order Monday to Friday before 14:00pm to guarantee next
day delivery.

Ordering Prescription-Only Products

This item requires a current prescription from your vet before we can dispatch it. The good news? Sorting it out is simple and only takes a moment.

  1. Select or register your pet
  2. Attach a clear image or PDF of the prescription
  3. Complete your order at checkout

As soon as your prescription reaches us, our team will verify the details and get your pet’s treatment posted out to you.

Order Monday to Friday before 14:00pm to guarantee next
day delivery.

A registered RCVS Vet Practice (7615389)

Product Features

Palatable Chewable Tablet

NexGard SPECTRA is a vet-approved chewable tablet for dogs, protecting against fleas, ticks, and worms in a single monthly dose.

  • Dual action formula
  • Tasty beef-flavoured
  • Easy to administer

It’s also prescribed monthly to help prevent lungworm, heartworm and eyeworm.

Pack of 3: Contains 3 tablets. A 3-month supply for one dog.

Pack of 10 x 3: 30 tablets. For multi-dog households or long-term veterinary stock.

Product Details

Prescription required. This medicine is dispatched once we have received and approved a valid veterinary prescription.

NexGard Spectra for dogs (3-month supply)

NexGard Spectra is a prescription-only (POM-V) chewable tablet made by Boehringer Ingelheim.

Highly palatable, beef-flavoured chewables formulated for the monthly treatment of flea and tick infestations. As a POM-V medication, NexGard Spectra also provides effective prevention against heartworm and treats intestinal worms (including roundworms, hookworms, and whipworms).

Administer one tablet monthly to ensure year-round protection.

Please ensure you select the correct weight bracket for your dog before ordering.

How Nexgard Spectra works?

NexGard Spectra contains two active ingredients, afoxolaner and milbemycin oxime, which target a wide range of external and internal parasites.

Afoxolaner belongs to the isoxazoline family. It blocks chloride channels in the nerve cells of fleas, ticks and mites, causing overstimulation of their nervous system and death. It kills fleas before they lay eggs.

Milbemycin oxime is a macrocyclic lactone. It disrupts nerve signalling in worms, leading to paralysis and death. Afoxolaner acts far more strongly on parasite nerve receptors than on a dog’s.

Your vet will advise how often to give it.

Available in packs of 3 chewable tablets. The 38mg / 8mg, 75mg / 15mg and 150mg / 30mg strengths also come in multipacks of 10 x 3 (30 tablets). NexGard Spectra cost depends on your dog’s weight and pack size. Prices can change. Check the current price on this page.

Size guide

  • Extra small dog (1.35kg to 3.5kg): 9mg / 2mg
  • Small dog (over 3.5kg to 7.5kg): 19mg / 4mg
  • Medium dog (over 7.5kg to 15kg): 38mg / 8mg
  • Large dog (over 15kg to 30kg): 75mg / 15mg
  • Extra large dog (over 30kg to 60kg): 150mg / 30mg
  • Over 60kg: your vet will advise which tablets to use

Please note, in the UK, you can’t purchase this item without a valid veterinary prescription. Always follow the label and your vet’s instructions.

Full product information: NOAH Compendium

Instructions

How to administer NexGard SPECTRA chewable tablets?

  • Orally,
  • Once a month,
  • With or without food

NexGard SPECTRA chewable tablets are beef-flavoured and palatable. Most dogs readily accept them, with studies showing 9 out of 10 dogs prefer NexGard SPECTRA.

Do not use NexGard SPECTRA in dogs with known hypersensitivity to the active ingredients or any of the other ingredients.

Warnings

  • Fleas and ticks must attach to the dog and begin feeding to be affected. For this reason, the risk of transmission of parasite-borne diseases cannot be completely excluded.
  • Parasite resistance may develop with frequent or repeated use of treatments from the same class. Use should be based on individual assessment and local parasite risk.
  • To support effective heartworm control, dogs should be tested for heartworm infection before starting preventative treatment. Only dogs testing negative should be treated.

Precautions for Use in Dogs

  • Use in puppies under 8 weeks of age or dogs weighing under 1.35 kg should be based on a veterinary benefit-risk assessment.
  • In areas where heartworm is present, dogs should be tested before treatment. Dogs with adult heartworm may require separate treatment, as NexGard SPECTRA is not intended to clear microfilariae.
  • The recommended dose must be followed carefully, particularly in collies and related breeds.

Precautions for the Person Giving the Product

  • This product may cause stomach upset if swallowed.
  • Keep tablets in the blister until use and store them in the outer carton.
  • If swallowed accidentally, especially by a child, seek medical advice immediately and show the product packaging.
  • Wash hands after handling the tablets.

Source: NOAH Compendium

Sizes

NexGard Spectra chewable tablets for dogs online

At Ashcroft 4 Pets, we offer NexGard SPECTRA Chewable Tablets for dogs of all sizes.

Your vet will decide whether NexGard Spectra is suitable for your dog and which strength to use. Always follow the label and your vet’s prescription.

  • 9mg / 2mg chewable tablets for dogs 1.35kg to 3.5kg
  • 19mg / 4mg chewable tablets for dogs over 3.5kg to 7.5kg
  • 38mg / 8mg chewable tablets for dogs over 7.5kg to 15kg
  • 75mg / 15mg chewable tablets for dogs over 15kg to 30kg
  • 150mg / 30mg chewable tablets for dogs over 30kg to 60kg

Over 60kg: your vet will advise which tablets to use

Pack size: Pack of 3 chewable tablets, The 38mg / 8mg, 75mg / 15mg and 150mg / 30mg strengths also come in packs of 30 (10 x 3) tablets.

Prescription only. Your vet’s prescription must match the size you order.

Key Benefits

Key Benefits

  • Made for very small dogs (1.35kg–3.5 kg)
  • Protects against fleas, ticks, worms, and lungworm
  • One tasty chew covers multiple parasites
  • Lasts a full month with each dose
  • Vet-approved, beef-flavoured, and easy to give

Ingredients

Active Ingredient
Milbemycin Oxime, Afoxolaner
Other Ingredients 

NexGard SPECTRA chewable tablet also contains inactive ingredients that help with flavour, stability, and tablet formation.

How it works to order pet prescription medications online

Prescription required for this item. We need a valid written prescription from your vet before we can dispatch.

Legal category: POM-V

Choose your
treatment

Select the treatment you would like to order

Upload a prescription copy at
the checkout

Provide all the information about your pet

Express
Delivery

Your order will be sent in discreet packaging.

Frequently asked questions

What does Nexgard Spectra cover?
NexGard SPECTRA protects dogs against fleas, ticks, mites, heartworm, and common intestinal worms, including roundworm, hookworm, and whipworm. It is a monthly all-in-one treatment.
How quickly does NexGard SPECTRA start working?
It begins killing fleas within hours of administration. Most ticks are killed within 48 hours, helping reduce the risk of tick-borne disease.
Does NexGard SPECTRA need to be given with food?
No. NexGard SPECTRA can be given with or without food. Most dogs accept the chew easily due to its flavoured formulation.
Can my dog be bathed after taking NexGard SPECTRA?
Yes. NexGard SPECTRA is an oral tablet, so bathing or swimming does not affect its effectiveness.
Does NexGard Spectra cover tapeworm?

Not directly. It has no licensed activity against tapeworms themselves, but it reduces the risk of flea tapeworm (Dipylidium caninum) for 30 days by killing the fleas that spread it.

If your dog needs tapeworm treatment, your vet may prescribe a separate product alongside it.

At what age can puppies start NexGard SPECTRA?
Puppies can start NexGard Spectra from 8 weeks of age, provided they weigh at least 1.35kg. For younger or lighter puppies, your vet will decide whether it's suitable.
How often should NexGard SPECTRA be given?
Give one tablet once a month. Monthly dosing is important, particularly for heartworm prevention.

Does NexGard Spectra cover lungworm?

Yes. NexGard Spectra is licensed to prevent lungworm (Angiostrongylus vasorum) when given monthly. It reduces the level of infection with immature adult and adult lungworm in the heart and lungs.
Is NexGard Spectra safe for dogs?

NexGard Spectra is licensed for dogs from 8 weeks old and 1.35kg, and can be used in pregnant and nursing dogs. Side effects are uncommon, affecting between 1 and 10 dogs in every 1,000 treated, and include vomiting, diarrhoea, lethargy, loss of appetite and itching, usually short-lived. Very rarely, reddened skin or neurological signs such as tremors or seizures have been reported.

Your vet will check it's suitable before prescribing, particularly for collies and related breeds, breeding males, and dogs on other medicines.

How long does NexGard Spectra kill fleas and ticks for?

Killing activity against fleas lasts 5 weeks. Killing activity against ticks lasts 4 weeks.

Latest Blogs

Maximum file size: 256 MB

Add New Pet

Add Photo

To ensure we send the right the right type of medication please tell us about your pet below.

Date of Birth (please approximate if unsure)*

Allergies?