Cheristin Flea Treatment & Prevention for Cats — 6 Doses

Name: Cheristin Flea Treatment & Prevention for Cats — 6 Doses
Brand: Cheristin
SKU: B00I9ZUL02
Price: 84.9 USD
Availability: InStock
Rating: 4.5 (22264 reviews)

4.522,264 ratings on Amazon

Fleas keep office hours: roughly the first warm week of spring to the last mild day of fall. Six monthly doses cover that entire shift for one cat — a single purchase in March that means the subject never comes up again until winter.

Inside the box6 × single-dose applicatorsSpinetoram 11.2%Twist-and-use rounded tip

Pack size: 3 doses 6 doses

$84.90$14.15 per dose

Price set by the retailer and may change. Ships and returns via the Amazon listing.

What this box is actually for

Half a year, one boxSix applicators on a monthly rhythm outlast the whole US flea season.
Cheapest way to own itThe lowest per-dose price in the line — the gap repeats every month.
Multi-cat arithmetic: noneOne size fits every cat over 1.8 lbs; the box serves the whole windowsill.
Six weeks per applicationEach application keeps killing new fleas through six full weeks.
A spare in the drawerUnopened applicators wait patiently — no refrigeration, no expiry panic.

Directions & dose

The label, condensed

Part the fur at the base of the head, empty one full applicator onto the skin, and let it dry. That is the whole procedure — the table holds everything else worth knowing before you order.

The full application guide →

Cheristin — facts panel

Active ingredient	Spinetoram 11.2% — spinosyn class, contact action
Form	Topical solution, single-use applicator with rounded tip
Dose	One full applicator per cat — one size for all weights
Schedule	Monthly; each dose protects through 6 weeks
Speed	Starts killing fleas in 30 minutes; 98–100% within 12 hours
Minimum age / weight	8 weeks old and 1.8 lbs — both conditions
Prescription	Not required — over-the-counter
Kills ticks?	No — Cheristin is a dedicated flea product

The honest column

Side effects, read before you dose

What owners report most often

The label's most commonly reported reactions are local and cosmetic: hair loss, greasy or clumped fur, or mild redness and itching at the application spot. Less commonly, short-lived inactivity, vomiting or a skipped meal have been reported — typically resolving within a day or two.

The multi-cat grooming rule

Cats groom each other exactly where Cheristin goes. In multi-cat homes, keep housemates from grooming the treated spot until it is fully dry — dose everyone in the same sitting and supervise the first hour, or separate briefly.

When to call the vet

Marked lethargy past 48 hours, repeated vomiting, drooling, tremors, or anything that simply feels wrong for your cat — call your veterinarian, and have the box in hand; the label and lot number answer half their questions. Elanco also prints a product-support line on every carton.

Asked about this box

Before you click through

Longer answers live in the FAQ and the reading corner.

Monthly, or every six weeks?

The label protects through six weeks, but a fixed monthly date is the schedule that never drifts into a gap. Pick the 1st, tie it to the pension day, whatever survives real life.

Can two cats share the box?

Yes — each applicator is one full dose for any cat over 1.8 lbs. Six doses are six cat-months however you distribute them; just don't split a single applicator between animals.

Why is this the box most households settle on?

Because a flea problem solved in March and not thought about until October feels less like pet medication and more like insurance — and this is the cheapest per month way to buy that.