Zoetis Simparica (Sarolaner) Tick and Flea Control Tablet for Dogs (1 tablet)

Zoetis Simparica (Sarolaner) Tick and Flea Control Chewable Tablet for Dogs - Fast-Acting Monthly Oral Antiparasitic for Ticks and Fleas (10–20kg & 20–40kg, Single Tablet)

Zoetis Simparica is a once-monthly chewable tablet for dogs containing Sarolaner - an isoxazoline-class ectoparasiticide that kills adult fleas and four species of ticks through systemic bloodstream delivery. Starts killing fleas within 3 hours and ticks within 8 hours of administration. Available in the 10–20kg variant containing Sarolaner 20mg (MRP ₹563) and the 20–40kg variant containing Sarolaner 40mg (MRP ₹656), sold as a single tablet per pack. For dogs aged 6 months and above. Prescription required.

Before proceeding: an important clarification.

Simparica and Simparica Trio are two different products by Zoetis. This listing - Simparica - contains Sarolaner only and provides protection against ticks and fleas exclusively. Simparica Trio contains Sarolaner + Moxidectin + Pyrantel Embonate and additionally covers heartworm disease and intestinal parasites. If your vet has prescribed Simparica Trio, that is a separate product available here on Supertails. This page covers the original Simparica (Sarolaner-only) variant.

Tick season in India is not a season - it's a permanent condition, peaking during and after the monsoon but present year-round. Brown dog ticks (Rhipicephalus sanguineus) are found in every Indian city, in parks, on pavements, on other dogs at the vet clinic, and on blades of grass in residential complexes. Spot-on treatments, shampoos, and powders work topically - on the coat surface. Simparica works systemically: the Sarolaner is absorbed into your dog's bloodstream after oral administration, and when a tick or flea bites and feeds, it ingests the active ingredient and dies. There's no coat coverage to wash off, no application spot to worry about, no timing of baths. One tablet. One month. Done.

Manufactured by Zoetis Inc., 601 West Cornhusker Highway, Lincoln, Nebraska, United States. Marketed by Zoetis India Limited, Godown No. 1 & 2, Bldg. No.12B, Prithvi Complex, Reti Bunder Road, Kalher, Tah. Bhiwandi, Maharashtra (India) 421302.

Uses and Benefits

• Adult flea elimination - Sarolaner kills adult fleas before they can lay eggs; flea killing begins within 3 hours of administration
• Four-species tick elimination - kills brown dog ticks (Rhipicephalus sanguineus, the most common Indian tick), Amblyomma americanum, Dermacentor variabilis, Ixodes scapularis - tick killing begins within 8 hours of administration
• 35-day protection window - each single tablet provides 35 days of tick and flea protection - 5 days longer than the standard 30-day claim, providing buffer against late doses
• Flea Allergy Dermatitis (FAD) management - eliminating adult fleas before they can feed interrupts the allergic reaction in flea-sensitive dogs; Simparica can be used as part of a FAD management strategy
• Sarcoptic mange (Sarcoptes scabiei) - Sarolaner is effective against sarcoptic mange mites at the standard tick/flea dose; if your dog has a mange diagnosis, confirm with your vet whether Simparica is appropriate as part of the treatment protocol
• Oral, systemic delivery - because the active ingredient is in the bloodstream rather than on the coat, effectiveness is not reduced by bathing, swimming, rain, or short coat - a key practical advantage over topical spot-ons for water-loving breeds

Composition and Product Specifications

Side Effects of Zoetis Simparica

Simparica is generally well-tolerated by healthy adult dogs. Zoetis clinical trial data reports the following:

• Common, mild, self-limiting: Vomiting and diarrhoea are the most frequently reported side effects in clinical trials; typically appear within the first 24 to 48 hours and resolve without treatment
• Lethargy - occasional, self-limiting; usually resolves within 48 hours
• Decreased appetite - mild, temporary; typically 1 to 2 days post-administration

Neurological adverse reactions - the most important safety information for this product:

• Sarolaner belongs to the isoxazoline class of drugs. Isoxazolines have been associated with neurological adverse reactions in dogs, including tremors, ataxia (unsteady gait, wobbling), and seizures - in dogs both with and without a prior history of neurological disorders
• These reactions are rare at the recommended dose in healthy dogs but are not zero-risk, particularly in dogs with pre-existing neurological conditions
• One verified buyer on Supertails reported their 35kg dog developing temporary hind limb weakness and inability to walk the day after taking the 20–40kg tablet. The dog appeared to recover but the experience was distressing. This is consistent with known isoxazoline-class neurological adverse reaction reports globally
• If your dog has ever had a seizure, has epilepsy, or has any diagnosed neurological condition: do not use Simparica without explicit, specific discussion with your neurologist or veterinarian. An alternative non-isoxazoline tick and flea prevention protocol should be considered

If you observe any neurological signs - tremors, loss of coordination, seizure, inability to use limbs - after giving Simparica: stop the medication and contact your vet immediately. Do not wait to see if symptoms resolve on their own.

How to Use Zoetis Simparica?

• Administer orally - the tablet can be given with or without food
• The tablet is liver-flavoured and palatable; most dogs accept it directly from the hand or with a small amount of food
• Administer once every 30 days (or up to every 35 days) for continuous protection

Weight-based dosing verification:

At 20kg exactly - confirm with your vet whether the 10–20kg or 20–40kg tablet is more appropriate for your specific dog.

How Does Simparica Work?

• Sarolaner is an acaricide (anti-tick) and insecticide belonging to the isoxazoline family
• After oral administration, Sarolaner is rapidly absorbed from the gastrointestinal tract and distributes throughout the bloodstream. Bioavailability is >85% - meaning almost all of the administered dose reaches the bloodstream
• Sarolaner's mechanism: it blocks GABA-gated and glutamate-gated chloride ion channels in the central nervous system of insects and arachnids (ticks, fleas). Blocking these channels prevents chloride ions from entering nerve cells, causing uncontrolled neural excitation in the parasite - leading to paralysis and death
• Sarolaner shows selective potency at insect and arachnid receptors compared to mammalian receptors, providing the safety margin that allows it to be used in dogs at therapeutic doses
• The blood concentration reaches tick-killing levels within 3 to 4 hours of oral administration and remains above the minimum lethal concentration for ticks and fleas for the full 35-day protection window
• Because it works via the bloodstream, every ectoparasite that bites and feeds on your dog - regardless of where on the body the bite occurs - ingests the lethal concentration of Sarolaner

Safety Advice

• For dogs 6 months of age and above only - safety not established in puppies under 6 months
• Use with extreme caution in dogs with a history of seizures or any neurological disorder - discuss explicitly with your vet before using any isoxazoline product
• Safety not established in breeding, pregnant, or lactating dogs - consult your vet before use
• Never give the 20–40kg tablet to a dog under 10kg - the higher Sarolaner dose calibrated for large dogs is excessive for small dogs
• This is a prescription-required medication in India - always use under veterinary guidance
• Confirm the dog's exact body weight before each monthly dose - particularly for growing dogs whose weight may change meaningfully between monthly doses
• Do not confuse Simparica with Simparica Trio - they are different products with different active ingredient profiles and different parasite coverage. Always check the product name carefully before purchasing and administering
• Store in a cool, dry place away from direct sunlight; keep out of reach of children

Vet Tip:

"Simparica (Sarolaner) is a well-established isoxazoline oral ectoparasiticide with a strong efficacy record - it reaches therapeutic blood concentrations within 3 to 4 hours of administration and maintains them above the minimum lethal concentration for ticks and fleas for the full 35-day period. My important clinical notes for pet parents considering this product are two: first, confirm clearly whether you've been prescribed the original Simparica (Sarolaner only - ticks and fleas) or Simparica Trio (Sarolaner + Moxidectin + Pyrantel - which additionally covers heartworm and intestinal worms). These are different formulations with different coverage profiles. Second, use with caution in dogs with any history of neurological disorders - the isoxazoline class is associated with a low but real risk of neurological adverse reactions including tremors and seizures in predisposed individuals. If your dog has ever had a seizure, discuss this specifically with your vet before choosing any isoxazoline-class product." - Dr. Rinu Thomas, MVSc (8+ years)

What If You Miss a Monthly Dose?

• Give Simparica as soon as you remember and restart the monthly schedule from that new date
• Do not give two tablets at once to compensate for the gap
• Simparica's 35-day efficacy window (rather than exactly 30 days) provides a small buffer - if the dose is a few days late but within 35 days of the last dose, protection has been maintained continuously
• Beyond 35 days without a dose, your dog is in an unprotected window - particularly concerning during the Indian monsoon season when tick activity peaks; prioritise getting the next dose in promptly
• Unlike Simparica Trio, the original Simparica does not cover heartworm - so a missed dose does not create heartworm risk that cannot be addressed at the next dose (as it might with a combined product)

All Substitutes

Simparica (Sarolaner-only) sits within the oral isoxazoline tick and flea category. Here are the most clinically relevant confirmed live alternatives on Supertails:

The critical comparison for Indian pet parents:

For most Indian dogs needing comprehensive parasite coverage, Simparica Trio provides more complete protection than the original Simparica at a comparable price. The original Simparica is most appropriate when a vet has specifically prescribed sarolaner-only coverage (no heartworm concern), or where the cost difference is meaningful and heartworm/worm coverage is managed through a separate product.

Quick Tips for Safe Monthly Dosing

• Always confirm your dog's exact current body weight before each monthly dose - particularly relevant for puppies and young dogs growing between doses; a dog who was 18kg last month may now be 21kg and require the 20–40kg tablet
• Note the distinction between Simparica and Simparica Trio in your medication records - they have the same manufacturer and similar names but are substantively different products. Confusion between them is documented in buyer reviews and is preventable
• Administer after a light meal - most dogs accept the liver-flavoured tablet directly, but a small amount of food alongside can reduce the chance of digestive side effects
• Observe your dog for the first 24 hours after the first dose - neurological side effects, if they occur, typically appear within this window; note any changes in gait, responsiveness, or behaviour and report immediately to your vet
• For dogs who are also on monthly deworming, Simparica does not replace a dewormer - it covers ticks and fleas only. You can administer Simparica and your regular dewormer on the same day unless your vet specifies otherwise
• Set a monthly calendar reminder on the same date each month - consistent monthly timing maintains protection without gaps
• Browse our complete dog tick and flea collection to compare all formats - oral tablets, spot-ons, collars, and sprays - if you'd like to compare alternatives before deciding

Vets Also Recommend

• Browse the complete dog tick and flea treatment collection on Supertails - every format, brand, and active ingredient in one place
• For comprehensive coverage including heartworm and intestinal worms: Zoetis Simparica Trio
• For a non-isoxazoline alternative safe for dogs with seizure history: Frontline Plus Spot-On
• Pair monthly oral tick protection with a deworming routine: browse our dog dewormer collection
• Explore all dog pharmacy and medicines on Supertails
• Explore our dog preventive care collection for a complete monthly health routine
• For personalised advice on whether Simparica, Simparica Trio, or an alternative is appropriate for your specific dog's health history and lifestyle, consult a vet on Supertails

Disclaimer: Supertails' sole intention is to ensure that its consumers get information that is expert-reviewed, accurate, and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

One Tablet. One Month. From the World's Largest Animal Health Company.

Zoetis - the company behind Simparica - is the world's largest dedicated animal health company, with products used by vets in over 100 countries. Simparica is one of their most trusted oral ectoparasiticides: fast-acting within 3 to 8 hours, effective for 35 days, and systemically delivered so bathing and swimming don't reduce its protection. For tick and flea control specifically, it is one of the most clinically well-studied oral options available to Indian pet parents.

10–20kg (MRP ₹563) | 20–40kg (MRP ₹656) - single tablet per pack.

Add Zoetis Simparica to Cart - Shop Now

FAQs

What is the difference between Simparica and Simparica Trio?

Simparica (this product) contains Sarolaner only and covers ticks and fleas exclusively. Simparica Trio contains Sarolaner + Moxidectin + Pyrantel Embonate and additionally prevents heartworm disease and controls intestinal roundworms and hookworms. If your vet prescribed Simparica Trio, that is a different product available separately on Supertails. Always check the exact product name and active ingredients before purchasing and administering.

How quickly does Simparica start killing ticks and fleas?

Simparica begins killing fleas within 3 hours of oral administration and ticks within 8 hours. This rapid onset is one of its clinical advantages - in an active tick infestation, meaningful kill begins within the same day of the first dose. Blood concentrations of Sarolaner remain above the minimum lethal concentration for ticks and fleas for the full 35-day protection window without re-dosing.

Is Simparica safe for dogs with a history of seizures?

No - not without specific veterinary neurologist clearance. Sarolaner belongs to the isoxazoline drug class, which is associated with neurological adverse reactions including tremors, ataxia, and seizures in dogs with or without a prior neurological history. If your dog has epilepsy, has ever had a seizure, or has any diagnosed neurological disorder, discuss this explicitly with your vet before using Simparica or any other isoxazoline product. A non-isoxazoline alternative such as Frontline Plus spot-on may be more appropriate.

Simparica vs NexGard vs Bravecto - which is best for my dog?

All three are effective oral isoxazoline ectoparasiticides. The practical differences: Bravecto provides 12 weeks of protection per dose (vs 30 to 35 days for Simparica and NexGard) making it more convenient for forgetful pet parents. NexGard has the widest prescriber familiarity in India and a beef flavour that most dogs accept readily. Simparica has a 35-day window (5 days longer than NexGard) and is effective against sarcoptic mange. Your vet's recommendation based on your dog's specific health history and lifestyle is the most important factor.

Can I give Simparica to a puppy under 6 months?

No - Simparica is approved only for dogs aged 6 months and above, weighing at least 2.8kg. The safety of Sarolaner has not been established in puppies under 6 months. For puppies between 8 weeks and 6 months needing tick and flea protection, Frontline Plus spot-on (approved from 8 weeks) is the recommended alternative. At 6 months, you can transition to an oral isoxazoline like Simparica if your vet approves.

Does Simparica protect against heartworm?

No - the original Simparica (this product) contains only Sarolaner and does not prevent heartworm disease. For heartworm prevention alongside tick and flea control, Simparica Trio - which adds Moxidectin to the formula - is the appropriate Zoetis product. In India's climate, where mosquitoes are present year-round and heartworm transmission is a documented risk in multiple cities, heartworm prevention is worth discussing with your vet.

My dog had temporary hind limb weakness after taking Simparica. What should I do?

Contact your vet immediately if your dog shows any neurological symptoms - including hind limb weakness, unsteady gait, tremors, or inability to walk - after taking Simparica. This is a documented isoxazoline class adverse reaction. Do not give another dose of Simparica or any other isoxazoline product until your vet has assessed the situation and confirmed it is safe. A non-isoxazoline tick prevention alternative may be recommended for future use.