{"topic_id":"owner_education_isoxazoline_plain","category":"owner-education","context":"---\ntopic_id: owner_education_isoxazoline_plain\ncategory: owner-education\ntitle: \"Plain-language: Are isoxazoline flea-and-tick drugs (the four brothers) safe? (EN+ZH)\"\nlang: en\nsource: \"Derived from isoxazoline-four-brothers-ade article (C1-verified source topics)\"\nsource_file: web/articles/articles/isoxazoline-four-brothers-ade.md\ndate_parsed: 2026-08-16\ntokens_estimated: 360\nverified: true\nverification: derived\nsource_document: \"Isoxazoline-class ectoparasiticides adverse-event reporting — plain-language owner summary\"\ncitation:\n  authority: \"FDA CVM openFDA (via source article)\"\n  title: \"Isoxazoline-class ectoparasiticides adverse-event reporting — plain-language owner summary\"\n  url: \"\"\n  retrieved: \"2026-08-16\"\n  ref: \"derived from isoxazoline-four-brothers-ade\"\n  doc_type: \"derived plain-language summary\"\n  needs_review: false\nlicense: derived\n---\n\n**EN — For pet owners.** `Afoxolaner, fluralaner, sarolaner and lotilaner are all isoxazoline-class agents` — the four common flea-and-tick pills/chews. They work the same way: `they block insect and acarine GABA- and glutamate-gated chloride channels, killing fleas and ticks.` Their US FDA adverse-event report totals differ hugely: `Fluralaner: 88486`, `Sarolaner: 79692`, `Afoxolaner: 69037`, `Lotilaner: 13432`. The source notes `Seizure NOS appears in every brother` — a class-wide neurological signal in the reports. Two cautions: `*\"Lack of efficacy\"* terms denote product-performance reports (the product didn't kill the parasite)` and must not be read as toxicity; and `reported ≠ causal`. Bottom line — report counts differ mostly with exposure breadth; a filed report is not proof of harm.\n\n**中文 — 给宠物主人。** `Afoxolaner, fluralaner, sarolaner and lotilaner are all isoxazoline-class agents`——四种常见异噁唑啉类驱虫药。作用机制相同：`they block insect and acarine GABA- and glutamate-gated chloride channels, killing fleas and ticks.`（阻断跳蚤蜱虫的氯离子通道将其杀死。）四者在美国 FDA 不良事件报告总数差别很大：`Fluralaner: 88486`、`Sarolaner: 79692`、`Afoxolaner: 69037`、`Lotilaner: 13432`。源文指出 `Seizure NOS appears in every brother`（四种的报告里都出现癫痫条目，是全类共有的神经学信号）。两点注意：`*\"Lack of efficacy\"* terms denote product-performance reports (the product didn't kill the parasite)`（\"无效\"类术语是产品性能报告，不能当成毒性）；且 `reported ≠ causal`（有报告 ≠ 有因果）。结论——报告数量差异主要反映使用面广度；有报告不等于证明有害。\n\nSource article: `isoxazoline-four-brothers-ade` (built from C1-verified openFDA source topics).\n\n## Claims (verified as substrings of the C1-verified source article)\n- `Afoxolaner, fluralaner, sarolaner and lotilaner are all isoxazoline-class agents`\n- `they block insect and acarine GABA- and glutamate-gated chloride channels, killing fleas and ticks.`\n- `Fluralaner: 88486`\n- `Sarolaner: 79692`\n- `Afoxolaner: 69037`\n- `Lotilaner: 13432`\n- `Seizure NOS appears in every brother`\n- `*\"Lack of efficacy\"* terms denote product-performance reports (the product didn't kill the parasite)`\n- `reported ≠ causal`\n","sources":["Derived plain-language — Isoxazoline-class ectoparasiticides adverse-event reporting — plain-language owner summary (retrieved 2026-08-16)"],"source":{"authority":"Derived plain-language","title":"Isoxazoline-class ectoparasiticides adverse-event reporting — plain-language owner summary","url":"","retrieved":"2026-08-16","ref":"","doc_type":"official source","source_document":"Isoxazoline-class ectoparasiticides adverse-event reporting — plain-language owner summary","verification_file":"web/articles/articles/isoxazoline-four-brothers-ade.md"},"source_document":"Isoxazoline-class ectoparasiticides adverse-event reporting — plain-language owner summary","source_file":"web/articles/articles/isoxazoline-four-brothers-ade.md","trust":{"authority_tier":"ungraded","fidelity":"verbatim","license":"derived","display_grade":"pending"},"tokens_estimated":400,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}