Simparica vs NexGard in India — Which Monthly Chew Is Better? (2026)

Author: the HempyTails Veterinary Team
Reviewed by: the HempyTails Veterinary Team
Last updated: October 2026
Read time: 8 minutes

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Once you have decided on a monthly chew for flea and tick prevention, the choice in Bangalore usually comes down to these two. They work the same way, cover the same parasites and are dosed on the same monthly rhythm, so the differences are in the details: how fast they act, how small a dog they can be given to, and what else they are licensed for.

This guide sets those details side by side so you can pick with confidence. (Weighing up a 3-monthly chew instead? See NexGard vs Bravecto.)

Simparica vs NexGard — At a Glance

	Simparica	NexGard
Active ingredient	Sarolaner	Afoxolaner
Drug class	Isoxazoline	Isoxazoline
Dosing interval	Every month	Every month
Form	Flavoured chew	Flavoured chew
Flea kill speed	Starts within about 3 hours	4–8 hours
Tick kill speed	Starts within about 8 hours	24–48 hours
Smallest weight band	From 1.3 kg	From 2 kg
Minimum age	Varies by country (8 weeks to 6 months): check the pack	From 8 weeks
Affected by bathing/swimming	No (oral)	No (oral)
For cats?	No	No
Available at HempyTails	Yes — in store, Old Airport Road pharmacy	Yes — in store, Old Airport Road pharmacy

What Simparica and NexGard Have in Common

• They work from the inside. The chew is absorbed into the bloodstream; a flea or tick that bites receives a lethal dose. Baths, swimming and Bangalore’s monsoon humidity don’t wash them off, unlike spot-ons and sprays.
• They cover the parasites that matter here. Fleas, and the ticks that spread tick fever in Indian cities, above all the brown dog tick (Rhipicephalus sanguineus), which carries Ehrlichia and Babesia.
• They break the flea lifecycle. Both kill adult fleas before they lay eggs, which is why monthly use clears a household infestation far more reliably than older topical products.
• They are monthly. Same reminder, same routine, and you can switch between them at the next due date.

So this is not a choice between a good and a bad product. It is a choice between two very good products with slightly different strengths.

The Differences That Actually Matter

1. Speed against ticks

Both chews kill ticks after they attach, but Simparica starts working on ticks noticeably sooner (hours rather than a day or two). That matters because the diseases ticks carry are transmitted while the tick is feeding: the sooner it dies, the less time it has to pass on infection. For a dog that walks in tall grass, visits farms or has had tick fever before, faster tick kill is a sensible reason to prefer Simparica. For a city dog on pavements and parks with good monthly compliance, the difference is small.

Neither chew repels ticks. For genuinely high-exposure dogs, pairing a monthly chew with a Seresto collar adds a repel-before-bite layer.

2. Very small dogs and young puppies

Simparica’s smallest pack starts at around 1.3 kg, below NexGard’s smallest band of 2 kg. For toy breeds (Chihuahuas, Pomeranians, toy Poodles) and small puppies, that can make Simparica the only monthly chew that fits. The catch is minimum age: NexGard is licensed from 8 weeks, while Simparica’s minimum age differs between countries, so the pack insert and your vet have the final word for very young puppies.

3. Mange and ear mites

Isoxazolines are now widely used against Demodex and Sarcoptic mange, and both of these drugs have good evidence for it. In several countries Simparica is also licensed for ear mites. Which product your vet chooses for a skin condition will depend on the diagnosis and the local licence, so treat mange and ear problems under veterinary guidance rather than switching products on your own. (If Demodex is the main concern, Bravecto is often the first choice: see our NexGard vs Bravecto guide.)

4. Track record

NexGard was the first chew of its kind and has the longest real-world history, which many owners and vets find reassuring. Simparica arrived a little later and has a similarly strong record. Neither is “newer and riskier” in any meaningful sense today.

5. Cost

Per month, the two are usually close in price, and the exact figure depends on your dog’s weight band. WhatsApp our Old Airport Road pharmacy for current prices in your dog’s band. Over a year, either costs a fraction of treating a single episode of tick fever.

Which Should You Choose?

• Your dog is doing well on NexGard: stay on it. Consistency matters more than brand.
• High tick exposure, or a past bout of tick fever: Simparica, for its faster tick kill, ideally with a Seresto collar.
• Toy breed or a very small puppy under 2 kg: Simparica’s smaller band may be the only monthly chew that fits; confirm the minimum age with our vet.
• Standard city prevention: either; choose on price and what your dog happily eats.
• You often forget monthly doses: consider a 3-monthly chew instead (Bravecto).
• Cats: neither. Ask us about cat-specific products.

Safety, Side Effects and Puppies

Both chews have a strong safety record when dosed for the dog’s correct weight. Mild stomach upset is uncommon, and giving the chew with a meal makes it less likely. Regulators note that the isoxazoline class can rarely be linked to neurological signs such as tremors or seizures, so if your dog has a history of seizures, talk to your vet before starting either. For pregnant, nursing or very young dogs, always check with a veterinarian first.

Switching Between Them

You can switch at the next due date: give the new chew on the day the old one is due, and carry on monthly. There is no need for a washout period or a gap. If your dog is on any other parasite treatment at the same time, check the combination with our vet.

The Bottom Line

Simparica and NexGard are close cousins. Simparica’s edge is speed against ticks and a smaller weight band; NexGard’s is the longest track record. For most Bangalore dogs, the best product is the one given every month without fail.

Not sure which fits your dog? Our vet partner at Old Airport Road can weigh your dog, recommend the right product and band, and we dispense both from the in-store pharmacy. WhatsApp +91 98805 95707.

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Frequently Asked Questions

Is Simparica or NexGard better for dogs in India?
Both are excellent monthly isoxazoline chews and both protect against fleas and the ticks that spread tick fever. Simparica starts killing ticks sooner and comes in a smaller weight band; NexGard has the longest track record. For most dogs the better choice is the one your dog takes reliably every month.

Can I switch from NexGard to Simparica?
Yes. Give Simparica on the day the next NexGard dose is due, then continue monthly. No gap or washout is needed. Check with your vet if your dog is on other parasite treatments.

Which is better for ticks?
Both kill ticks; Simparica starts working on them faster. For high tick-exposure dogs, many vets pair a monthly chew with a repellent collar such as Seresto.

Can Simparica or NexGard be given to puppies?
NexGard is licensed from 8 weeks and 2 kg. Simparica comes in a smaller weight band, but its minimum age varies by country, so confirm with your vet before giving it to a young puppy.

Do Simparica and NexGard need a prescription?
In India they are best bought and dosed under veterinary guidance because dosing depends on your dog’s exact weight. Our vet partner at HempyTails Old Airport Road can weigh your dog and advise, and we dispense from the in-store pharmacy.

Are they safe for cats?
No. Neither is licensed for cats. Ask us about cat-specific flea and tick products.

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This article was medically reviewed by the HempyTails Veterinary Team. It is general educational information, not a substitute for individual veterinary advice. Last updated October 2026.