Prescription items are NON-RETURNABLE and NON REFUNDABLE Simparica Trio Chewable Simparica Trio makes it simple to deliver the protection every best friend deserves. Simparica Trio is the first monthly chewable to protect dogs against heartworm disease, five types of ticks, fleas, roundworms and hookworms, all in one monthly chewable. Simparica Trio works to get rid of ticks and fleas on dogs fast. It starts to kill deer ticks within 8 hours, and fleas within 4 hours. Protects dogs against heartworm disease, ticks & fleas, roundworms & hookworms Demonstrated safe for puppies as young as 8 weeks old, weighing at least 2.8 lbs Tasty chewable that you only need to give once a month FDA-approved and available with a vet’s prescription Dosing : This medication should be given orally each month. Consult your veterinarian for proper dosing instructions. Storage Instructions Store at or below 30C (86F). Possible Side Effects The most frequently reported adverse reactions in clinical trials were vomiting and diarrhea. Precautions: If a dose is missed, a new dose should be given immediately. If a dose is vomited or spit out, a new dose should be given again. Then, continue the prescribed monthly dosing schedule.