{"hq_id":"hq-p-pet-000066","name":"Amitraz-Based Tick Collar for Dogs (Preventic, Monoamine Oxidase Inhibitor, Alpha-2 Agonist, Diabetic Pet Contraindication)","category":{"primary":"pet_care","secondary":"tick_collar","tags":["amitraz","Preventic","tick collar","dog","alpha-2 agonist","MAO inhibitor","formamidine","diabetes contraindication"]},"product_tier":"PET","overall_risk_level":"moderate","description":"Amitraz tick collars (brand: Preventic) release the formamidine acaricide amitraz continuously over 90 days, providing tick detachment and kill through alpha-2 adrenergic agonism and monoamine oxidase inhibition in arachnids. Amitraz is unique among pet pesticides in its pharmacological profile: it causes tick paralysis and detachment within 24-48 hours, making it valuable for tick-transmitted disease prevention. However, amitraz has significant mammalian effects — it is an alpha-2 adrenergic agonist causing sedation, bradycardia, and hypothermia in dogs at toxic doses, and inhibits monoamine oxidase, making it absolutely contraindicated in diabetic animals (causes transient hyperglycemia by inhibiting insulin release). NEVER use on cats — amitraz causes severe CNS depression in felines.","synthesis":{"derived_risk_level":"high","synthesis_confidence":0.82,"synthesis_method":"compound_composition","context_used":"human_adult","context_source":"product_users","exposure_modifier":1,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"diabetic dogs (inhibits insulin release), cats (CNS depression), puppies and small dogs (collar ingestion risk), children (dermal and oral exposure)","overall_risk":"moderate","primary_concerns":["Contraindicated in diabetic pets — causes hyperglycemia by inhibiting insulin release","Cat-toxic: causes severe CNS depression in felines","Collar ingestion by puppies causes acute amitraz poisoning (sedation, bradycardia, hypothermia)","Alpha-2 agonist effects: sedation, low heart rate, low body temperature at toxic doses"],"exposure_routes":"Dermal (continuous low-dose from collar). Ingestion (collar chewing by dogs or children — acute toxicity)."},"exposure":{"routes":["dermal","ingestion"],"contact_types":["dermal_prolonged","ingestion_accidental"],"users":["pet_dog","child","adult"],"duration":"chronic","frequency":"continuous_90_days","scenarios":["Dog: continuous low-dose dermal exposure over 90-day collar life","Child: dermal contact when petting dog's neck area; ingestion risk if collar is chewed by toddler","Dog ingestion: chewing or swallowing collar fragments causes acute amitraz toxicity (lethargy, ataxia, bradycardia)","Diabetic dog: contraindicated — amitraz inhibits insulin release causing hyperglycemia"],"notes":"Amitraz: formamidine acaricide. Mechanism: alpha-2 adrenergic agonist + MAO inhibitor + octopamine agonist in arthropods. Dog toxicity: alpha-2 agonism causes sedation, bradycardia, hypothermia, mydriasis. Diabetic pets: absolutely contraindicated — amitraz inhibits pancreatic insulin secretion via alpha-2 receptor activation. Cat contraindication: severe CNS depression at doses tolerated by dogs. Collar chewing incidents: ASPCA APCC reports significant ingestion cases in puppies."},"consumer_guidance":{"usage_warning":"DO NOT use amitraz collars on cats, diabetic animals, or dogs with liver disease. Monitor for collar chewing — if a dog ingests collar fragments, seek emergency veterinary care immediately (induces sedation, low heart rate, low blood sugar). Keep collar packaging away from children. Remove collar before bathing or swimming.","safer_alternatives":["Isoxazoline oral tick preventives (afoxolaner, sarolaner) — no collar ingestion risk","Flumethrin/imidacloprid collars (Seresto) — different mechanism, lower systemic absorption","Monthly fipronil spot-on treatments","Regular tick checks and environmental management"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"EPA Amitraz Registration — Restricted Use for Veterinary Products","citation":"40 CFR 180.287; EPA Registration Review Docket EPA-HQ-OPP-2005-0303","requirements":"Registered for use on dogs only. Label must state: 'Do not use on cats.' Contraindication warnings for diabetic animals required. Signal word: CAUTION.","compliance_status":null,"effective_date":null,"enforcing_agency":"EPA Office of Pesticide Programs","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Wrap spent collar in newspaper and dispose in sealed household trash. Do not incinerate. Keep away from aquatic environments.","hazardous_waste":false,"expected_lifespan":"90-day active life per collar"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000182","compound_name":null,"role":"active_ingredient","typical_concentration":"9% in Preventic collar; released over 90 days; alpha-2 agonist + MAO inhibitor"}],"identifiers":{"common_names":["amitraz-based tick collar for dogs (preventic, monoamine oxidase inhibitor, alpha-2 agonist, diabetic pet contraindication)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[],"sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-26"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-26","timestamp":"2026-05-02T18:32:32.927Z"}}