10 Best Cat Flea Treatment Oral Drops in The UK

Last updated on 24/08/2025

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Capstar Flea Tablets for Dogs and Cats from 1kg to 11kg, Oral Medication for Flea Treatment in Small Dogs and Cats, Contains 6x 11.4mg Nitenpyram Flea Tablet

3% OffFree Shipping

Why We Love It

Quick flea elimination guaranteed.
Starts working in 30 minutes.
Easy to administer tablets.

Main Highlights

Effective flea treatment: The fast-acting formula ensures quick elimination of fleas, with Capstar small dog and cat flea treatment you can literally see the dead fleas falling off your pet
Fast-acting: Capstar for cats and small dogs starts to kill fleas after 30 minutes and eliminates 95% to 100% of adult fleas within just 6 hours
For cats and small dogs: These fast-acting flea tablets feature an 11.4mg Nitenpyram formula which is suitable for cats and small dogs weighing from 1kg up to 11kg
Fuss-free: These cat and small dog flea treatment tablets are easy to administer and can be given with or without food. Use one tablet per day until fleas are no longer seen
Fights initial infestations: Capstar is ideal to use as a first line of attack against flea infestations due to its quick speed of kill, ensuring immediate and effective flea control

Itch | Flea & Tick Spot-On Treatment for Cats (1kg+) | Kills Fleas, Ticks, Lice & Eggs to Prevent Reinfestation | 6 Easy-Apply Pipettes

37% OffFree Shipping

Why We Love It

Kills fleas, ticks fast.
Vet-strength formula.
Long-lasting protection.

Main Highlights

KILLS FLEAS & TICKS EFFECTIVELY: Each treatment of Itch Flea effectively kills fleas in 24 hours, ticks in 48 hours and protects them for up to a month! Got a flea infestation? Use Itch Flea monthly, alongside Itch Flea Home Spray to tackle the microscopic mingers on your pet and home.
VET STRENGTH FORMULA WITH TWO ACTIVE INGREDIENTS: Fipronil kills live adult fleas, lice and ticks. Unlike cheaper brands, Itch Flea also includes (S) Methoprene. This prevents flea eggs from hatching, larvae from maturing, and immature stages from developing into adult fleas, preventing flea reproduction and massively reducing the chance of a returning infestation.
PREVENTS FLEAS COMING BACK (UNLIKE CHEAPER BRANDS) BY KILLING FLEAS, EGGS & LARVAE TOO: Not all flea treatments are equal. Our double-action formula attacks fleas, flea eggs and larvae, breaking the flea life cycle and preventing fleas coming back. Because, seriously, who wants that?
PROTECT FROM TICKS - Ticks are a threat because they carry serious diseases including Lyme Disease, Babesiosis and Tick-Borne Encephalitis Virus (TBEV) all of which can cause severe health complications for you or your cat. Itch Flea kills ticks. It won’t stop the pests from latching on, but it will kill them within 48 hours – dramatically reducing the chances of them transmitting a nasty infection.
PROTECTION FOR ADULT CATS AND KITTENS - Suitable for all cats and kittens over 1kg that are at least 8 weeks old. Contains 6 treatments to be used at monthly intervals as to protect your pet from further flea issues! Itch Flea is safe for all cats above 1kg, including those who are breeding, pregnant or lactating.

FRONTLINE Plus Flea & Tick Treatment for Cats and Ferrets - 6 Pipettes

53% OffFree Shipping

Why We Love It

Kills fleas and ticks efficiently.
Stops flea eggs from hatching.
Simple and quick application.

Main Highlights

KILLS FLEAS & TICKS – Fleas are killed within 24 hours and ticks within 48 hours, helping to protect cats from the discomfort and diseases these parasites cause
KILLS FLEA EGGS - Unlike most flea treatments, FRONTLINE Plus not only kills fleas but also stops their eggs from hatching and infesting the home
EASY APPLICATION - Simply empty one pipette onto your cat's skin at the base of the neck and it will quickly spread over their coat - it's as easy as that
TRIED AND TRUSTED - FRONTLINE's advanced vet-strength formula is highly efficacious and yet has an exemplary safety profile. It can be used on cats and kittens weighing at least 1 kg, from 8 weeks of age
TREAT 4-WEEKLY - It’s important to treat your pets year-round to prevent flea and tick infestations. One 6-pack provides your cat with 6 months of protection

FRONTLINE Spot On Flea & Tick Treatment for Cats - 6 Pipettes

38% OffFree Shipping

Why We Love It

Ensures 24-hour flea elimination.
Minimizes disease with tick defense.
Promises six-month pet protection.

Main Highlights

KILLS FLEAS - Fleas jumping onto your treated cat are killed within 24 hours, preventing infestations from building up
KILLS TICKS - Helps to reduce the risk of disease transmission by killing ticks that latch onto your treated cat
EASY APPLICATION - Simply empty one pipette onto your cat's skin at the back of the neck and it will quickly spread over their coat - it's as easy as that
TRIED AND TRUSTED - FRONTLINE's original vet-strength formula has an exemplary safety profile and can be used on kittens weighing more than 1 kg, from 8 weeks of age
TREAT MONTHLY - It’s important to treat your pets year-round to prevent flea and tick infestations. One 6-pack provides your cat with 6 months of protection

Advantage Spot On Flea Treatment For Large Cats and Rabbits Over 4kg (4 pipettes, 80mg), Kills Fleas Within 24 Hours, Prevents Further Infestation For Up To Four Weeks in Cats

Why We Love It

Breaks the flea life cycle.
Easy to apply monthly.
Kills fleas through contact.

Main Highlights

ADVANTAGE FLEA TREATMENT: Use Spot On Flea Treatment to keep your pets protected from fleas. Advantage spreads quickly across your pet’s skin and coat and is not absorbed into the bloodstream, meaning those pesky parasites do not have to bite to die 1.
FAST-ACTING FLEA PROTECTION: If you suspect your pet might be suffering with fleas, take action. Advantage kills fleas within 24 hours of application, meaning your pet can get back to living a full and happy life.
PREVENT REINFESTATION: For every adult flea that you see, there are many more eggs, larvae and pupae hidden away in carpets, upholstery and bedding. Apply spot on treatment every four weeks to prevent further infestations in cats.
FAST & SIMPLE TO APPLY: Protect your pets from fleas with our easy to apply pipette formulation. Apply one pipette of Advantage Spot On to the skin at the back of the neck at the base of the skull for cats and rabbits.
PROTECT YOUR PET, PROTECT YOUR HOME: If your pet has fleas, your home has fleas. Advantage is clinically proven to kill fleas, giving you peace of mind. With Advantage Flea Treatment, fleas are dead, not fed.

FRONTLINE Plus Flea & Tick Treatment for Cats and Ferrets - 3 Pipettes

29% OffFree Shipping

Why We Love It

Kills fleas and ticks quickly.
Prevents flea egg infestations.
Ensures easy application process.

Main Highlights

KILLS FLEAS & TICKS – Fleas are killed within 24 hours and ticks within 48 hours, helping to protect cats from the discomfort and diseases these parasites cause
KILLS FLEA EGGS - Unlike most flea treatments, FRONTLINE Plus not only kills fleas but also stops their eggs from hatching and infesting the home
EASY APPLICATION - Simply empty one pipette onto your cat's skin at the base of the neck and it will quickly spread over their coat - it's as easy as that
TRIED AND TRUSTED - FRONTLINE's advanced vet-strength formula is highly efficacious and yet has an exemplary safety profile. It can be used on cats and kittens weighing at least 1 kg, from 8 weeks of age
TREAT 4-WEEKLY - It’s important to treat your pets year-round to prevent flea and tick infestations. One 3-pack provides your cat with 3 months of protection

Itch | Flea & Tick Spot-On Treatment for Cats (1kg+) | Kills Fleas, Ticks, Lice & Eggs to Prevent Reinfestation | 3 Easy-Apply Pipettes

23% OffFree Shipping

Why We Love It

Breaks flea life cycle.
Kills fleas fast.
Easy application process.

Main Highlights

KILLS FLEAS & TICKS EFFECTIVELY: Each treatment of Itch Flea effectively kills fleas in 24 hours, ticks in 48 hours and protects them for up to a month! Got a flea infestation? Use Itch Flea monthly, alongside Itch Flea Home Spray to tackle the microscopic mingers on your pet and home.
VET STRENGTH FORMULA WITH TWO ACTIVE INGREDIENTS: Fipronil kills live adult fleas, lice and ticks. Unlike cheaper brands, Itch Flea also includes (S) Methoprene. This prevents flea eggs from hatching, larvae from maturing, and immature stages from developing into adult fleas, preventing flea reproduction and massively reducing the chance of a returning infestation.
PREVENTS FLEAS COMING BACK (UNLIKE CHEAPER BRANDS) BY KILLING FLEAS, EGGS & LARVAE TOO: Not all flea treatments are equal. Our double-action formula attacks fleas, flea eggs and larvae, breaking the flea life cycle and preventing fleas coming back. Because, seriously, who wants that?
PROTECT FROM TICKS - Itch Flea kills ticks. It won’t stop the pests from latching on, but it will kill them within 48 hours – dramatically reducing the chances of them transmitting a nasty infection.
PROTECTION FOR ADULT CATS AND KITTENS - Suitable for all cats and kittens over 1kg that are at least 8 weeks old. Contains 3 treatments to be used at monthly intervals as to protect your pet from further flea issues! Itch Flea is safe for all cats above 1kg, including those who are breeding, pregnant or lactating.

FRONTLINE Spot On Flea & Tick Treatment for Cats - 3 Pipettes

31% OffFree Shipping

Why We Love It

Kills fleas within 24 hours.
Reduces disease transmission risk.
Easy application for quick protection.

Main Highlights

KILLS FLEAS - Fleas jumping onto your treated cat are killed within 24 hours, preventing infestations from building up
KILLS TICKS - Helps to reduce the risk of disease transmission by killing ticks that latch onto your treated cat
EASY APPLICATION - Simply empty one pipette onto your cat's skin at the back of the neck and it will quickly spread over their coat - it's as easy as that
TRIED AND TRUSTED - FRONTLINE's original vet-strength formula has an exemplary safety profile and can be used on kittens weighing more than 1 kg, from 8 weeks of age
TREAT MONTHLY - It’s important to treat your pets year-round to prevent flea and tick infestations. One 3-pack provides your cat with 3 months of protection

The Pet Guru - FREE FROM FLEAS Spot-on Drops for Cats - Non-toxic Natural Fast Acting Spot-on Flea Treatment - Flea Control, 100ml

7% OffFree Shipping

Why We Love It

All-natural flea protection formula.
Expertly researched herbal extracts.
Recyclable eco-friendly packaging.

Main Highlights

PROTECTION FOR YOUR PETS: This easy to use all-natural spot-on formula works to keep your cats flea free. It’s tough on fleas, but tender on your loved ones and the environment.
NATURAL TINCTURE REMEDIES to protect your pet and your household. Each product contains a blend of expertly researched powerful and fast-acting pet and child-friendly herb and plant extracts and premium essential oils, chosen only for their efficiency and used in the minimum quantity necessary to perform. No excess for excess sake.
ACTIVE INGREDIENTS THAT REALLY WORK: Catnip & Cedarwood repel | Rosemary & Lavender deter | Quassia bark is anti-inflammatory & anti-parasitic | Marshmallow Root soothes
FAST ACTING NATURAL EFFECTIVE FORMULA: For cats of all sizes.
RECYCLABLE PACKAGING: Packaged in a 30% PCR and 100% recyclable plastic bottle with easily removable labels. The plastic contains a special dye to ensure it is detectable by scanners in recycling plants (unlike many other black plastics on the market).
MANUFACTURED IN UK: Designed, developed and manufactured in Suffolk by two animal loving families with a shared love for caring for the planet. “We believe our children, as well as our pets, are a product of their environment. The happier and healthier the environment, the happier and healthier they will grow.”
DIRECTIONS FOR USE: During flea season drop 1ml (1 full squeeze of the rubber pipette bulb) of the solution on to the back of the neck. For preventative use: Apply 1 time per week (for any size cat. During infestation: Apply 1 time per day for a week. Alternate the drop application area slightly for each application when prolonged use is necessary.

Oral Flea & Tick Support for Cats, Natural Flea and Tick Liquid Drops with Multivitamin for Pets - Cat Supports Skin & Coat - Flea Herbal Drop All Breeds and Sizes - Bacon Flavor

Free Shipping

Why We Love It

Natural flea and tick relief.
Supports overall health benefits.
Tasty bacon flavor for cats.

Main Highlights

Gentle Flea & Tick Comfort for Cats: Looking for a natural way to support your cat's comfort around fleas and ticks? This plant-based herbal formula is designed to work from within, offering daily support with naturally derived ingredients—ideal for indoor and outdoor cats.
With B Vitamins & Vitamin E: Formulated with B1, B6, B12, and Vitamin E to help support overall health, daily vitality, and skin condition—without the use of artificial additives.
Made with Safe, Natural Ingredients: Crafted with pumpkin seed extract, black walnut extract, Pau d'Arco and other herbal ingredients. Free from harsh chemicals, artificial flavors, or synthetic additives—suitable for kittens and senior cats.
For All Cats—Any Age or Breed: Whether you have a playful kitten or a wise senior, this liquid supplement offers an easy-to-use option for daily comfort. A simple alternative to powders, chews, or sprays—just add to food or give directly.
Tasty Bacon Flavor Cats Enjoy: Features a savory Bacon flavor that even picky cats will love. Add to food, water, or give directly with the dropper. Daily use suggested by weight: Under 10 lbs: 0.5 mL, 10–35 lbs: 1.25 mL Over 35 lbs: 2.5 mL

8.7

Excellent

We scanned 1999 products

We reviewed these offers relevant to the Cat Flea Treatment Oral Drops within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Capstar, Itch, FRONTLINE, Advantage, THE PET GURU, Cudory, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Cat Flea Treatment Oral Drops in the market, we considered we took a deep dive into 9996 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Capstar Flea Tablets for Dogs and Cats from 1kg to 11kg, Oral Medication for Flea Treatment in Small Dogs and Cats, Contains 6x 11.4mg Nitenpyram Flea Tablet. We love many things about this product by Capstar. What sets it apart from the competition is Quick flea elimination guaranteed, Starts working in 30 minutes, Easy to administer tablets.
The best value product for most shoppers and where user satisfaction is continuously the highest is Itch | Flea & Tick Spot-On Treatment for Cats (1kg+) | Kills Fleas, Ticks, Lice & Eggs to Prevent Reinfestation | 6 Easy-Apply Pipettes by Itch based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Cat Flea Treatment Oral Drops and the best cost-to-value ratio is FRONTLINE Plus Flea & Tick Treatment for Cats and Ferrets - 6 Pipettesat FRONTLINE with a 53% discount.
Our list of the best Cat Flea Treatment Oral Drops is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Cat Flea Treatment Oral Drops in The UK

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We concluded that: