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Deltamethrin/Deltamethrin Combination Products, Topical
What are topical deltamethrin/deltamethrin combination products?
Topical deltamethrin/deltamethrin combination products (brand names PetArmor®, Sentry®, Zodiac®, others) are synthetic pyrethroid insecticides used to repel mosquitoes and to kill fleas and ticks on dogs older than 12 weeks of age for up to 6 months. Products may also be used to repel and kill sandflies. It may be combined with pyriproxyfen or other insecticides.
It may be used off label (extra label) to treat other conditions in dogs. Many drugs are commonly prescribed for off-label use in veterinary medicine. “Off label” means the drug is being used in a way that has not been reviewed or approved by the U.S. Food and Drug Administration (FDA) or Health Canada. In these instances, follow your veterinarian’s directions and cautions carefully, as they may be significantly different from those on the label.
How do I give my pet topical deltamethrin/deltamethrin combination products?
This medication should take effect within several days, though full effects may not be seen for 2–3 weeks.
If you miss a dose, give it as soon as you remember, and then continue with the regular dosing schedule. If it is almost time for the next dose, skip the missed dose and resume the regular dosing schedule. Do not give the pet two doses at once.
Topical deltamethrin/deltamethrin combination products may cause the following side effects:
The following reactions are rare, but if they occur, contact your veterinarian immediately:
Drug sensitivities can develop over time with repeated exposure. Your pet may have no reaction after the first few doses, but may develop a sensitivity later. It is important to watch for signs of an allergic reaction over the entire course of treatment.
Other side effects may occur. If you notice anything unusual, contact your veterinarian immediately. This is a long-acting medication, meaning effects will last several weeks to months.
DO NOT USE in:
USE WITH CAUTION in dogs who are:
Certain medications should be USED WITH CAUTION when given with deltamethrin/deltamethrin combination products, including:
Be sure to tell your veterinarian about any medications (including vitamins, supplements, or herbal therapies) that your pet is taking before starting any new treatment.
If you suspect an overdose or an adverse reaction to the medication, call your veterinary office immediately. If they are not available, follow their directions in contacting an emergency facility. Adverse effects should also be reported to the FDA or Health Canada.
© Copyright 2025 LifeLearn Inc. Used and/or modified with permission under license. This content written by LifeLearn Animal Health (LifeLearn Inc.) is licensed to this practice for the personal use of our clients. Any copying, printing or further distribution is prohibited without the express written consent of LifeLearn. This content does not contain all available information for any referenced medications and has not been reviewed by the FDA Center for Veterinary Medicine, or Health Canada Veterinary Drugs Directorate. This content may help answer commonly asked questions, but is not a substitute for medical advice, or a proper consultation and/or clinical examination of your pet by a veterinarian. Please contact your veterinarian if you have any questions or concerns about your pet’s health. Created on Jan 22, 2025.
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