chemistry

Lotilaner

Lotilaner is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lotilaner rather than just read about it. In short: Lotilaner, sold under the brand name Xdemvy, is an ectoparasiticide (anti-parasitic) medication used for the treatment of blepharitis (inflammation of the eyelid) caused by infestation by Demodex (tiny mites). It is used as an eye drop.

Key takeaways

Lotilaner belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lotilaner to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lotilaner from memory before moving on to harder problems.

Reference excerpt

Lotilaner, sold under the brand name Xdemvy, is an ectoparasiticide (anti-parasitic) medication used for the treatment of blepharitis (inflammation of the eyelid) caused by infestation by Demodex (tiny mites). It is used as an eye drop. It was approved for medical use in the United States in July 2023. The US Food and Drug Administration (FDA) considers it to be a first-in-class medication. Lotilaner is a member of the isoxazoline family of compounds.

Medical uses Lotilaner is indicated for the treatment of Demodex blepharitis. It had been first used in veterinary medicine against fleas and ticks, and later for Demodex mites.

Veterinary uses Lotilaner, sold under the brand name Credelio among others, is a veterinary medication used to control fleas and ticks in dogs and cats. It is indicated for the treatment and prevention of flea infestations (Ctenocephalides felis) and for the treatment and control of tick infestations including lone star tick (Amblyomma americanum), American dog tick (Dermacentor variabilis), black-legged tick (Ixodes scapularis), and brown dog tick (Rhipicephalus sanguineus). It is taken by mouth. Lotilaner in combination with milbemycin oxime is sold under the brand name Credelio Plus. It is used in dogs to treat concurrent infestations with parasites living outside (ticks and/or fleas) and inside (worms) the animal's body. Lotilaner (brand Lotimax) is used for the treatment of flea, tick, and mite infestations in dogs, including treatment of demodicosis (caused by Demodex canis).

Mechanism of action Lotilaner paralyzes and kills parasites by interfering with the way that signals are passed between their nerve cells. Lotilaner is a gamma-aminobutyric acid (GABA)-gated chloride channel inhibitor selective for arthropods. Inhibition of these GABA chloride channels causes a paralytic action in the target organism leading to its death. Lotilaner is not an inhibitor of mammalian GABA mediated chloride channels when tested at up to 30 μM (18 μg/mL) in vitro (approximately 1100 times the RHOD).

Legal status In March 2024, the Committee for Veterinary Medicinal Products (CVMP) of the European Medicines Agency adopted a positive opinion, recommending the granting of a marketing authorization for the veterinary medicinal product Lotimax, Chewable tablet, intended for use in dogs. The applicant for this veterinary medicinal product is Elanco GmbH. Lotimax was approved for medical use in the European Union in April 2024.

Research Tarsus Pharmaceuticals has conducted phase II studies of lotilaner as a remedy to prevent tick bites in humans.

References

Illustrations

Worked examples

Example 1 — a first encounter with Lotilaner

Start with the simplest possible case. Write down what Lotilaner claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lotilaner before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lotilaner ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lotilaner

In research: Lotilaner appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lotilaner in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lotilaner is common in secondary-school and first-year university syllabi. It links to neighbouring topics Acaricides, Cat medications, Chloroarenes, so understanding it makes those chapters shorter.
In everyday life: Look for Lotilaner outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Lotilaner in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lotilaner means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lotilaner out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lotilaner in simple terms?

Why does Lotilaner matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lotilaner?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lotilaner.