Notice: Images are for illustration only and may not reflect the exact product you receive. Brand-name medications may look different depending on their country of origin—Canadian versions, for example, often include a "PR" symbol on the packaging. Rest assured, the medication, dosage, and active ingredients will be exactly as prescribed. Canada Pharmacy Store is committed to your health and safety, and we work only with licensed pharmacies to ensure you receive trusted, high-quality medication every time.
General Medication Fact Sheet for Trifexis
| Field | Information |
|---|---|
| Medication Name | Trifexis |
| Generic Name | Milbemycin oxime/spinosad |
| Purpose | Prevents heartworm disease, kills adult fleas, and treats and controls adult hookworm, roundworm, and whipworm infections in dogs. |
| Mechanism of Action | Milbemycin oxime interferes with parasite nerve transmission. Spinosad causes uncontrolled neuromuscular excitation in fleas and other insects. |
| Dosage Forms | Oral chewable tablets |
| Available Strengths | Vary based on dog’s weight (e.g., 5-10 lbs, 10.1-20 lbs, 20.1-40 lbs, 40.1-60 lbs, 60.1-120 lbs) |
| Dosage Frequency | Once a month |
| Common Side Effects | Vomiting, diarrhea, lethargy, decreased appetite, itching |
| Serious Side Effects | Seizures, incoordination, hypersensitivity reactions (hives, facial swelling, difficulty breathing) |
| Drug Interactions | Other medications that can cause neurological effects (consult with veterinarian). |
| Important Notes | Administer with food for better absorption. Consult with veterinarian before use in dogs with a history of seizures. |
| Storage | Store at room temperature, away from moisture and direct sunlight. |
| Missed Dose | Give the missed dose immediately and resume monthly dosing schedule. |
| Alternatives | Heartgard Plus (ivermectin/pyrantel), Interceptor Plus (milbemycin oxime/praziquantel), Revolution (selamectin), Advantage Multi (imidacloprid/moxidectin) |
Trifexis Alternatives
| Medication | Mechanism of Action | Notes |
|---|---|---|
| Heartgard Plus (ivermectin/pyrantel) | Ivermectin: Interferes with parasite nerve and muscle function; Pyrantel: Acts as a depolarizing neuromuscular blocking agent. | Prevents heartworm and treats certain intestinal worms. Does not treat fleas. |
| Interceptor Plus (milbemycin oxime/praziquantel) | Milbemycin oxime: Interferes with parasite nerve transmission; Praziquantel: Increases cell membrane permeability in the parasite. | Prevents heartworm and treats/controls various intestinal worms. Does not treat fleas. |
| Revolution (selamectin) | Selamectin: Interferes with nerve and muscle function in parasites. | Prevents heartworm, kills adult fleas, treats ear mites and sarcoptic mange, and controls certain ticks and worms. |
| Advantage Multi (imidacloprid/moxidectin) | Imidacloprid: Blocks nerve transmission in fleas; Moxidectin: Interferes with parasite nerve transmission. | Prevents heartworm, kills adult fleas, and treats certain intestinal worms and mites. |
Trifexis Side Effects
| Common Side Effects | Serious Side Effects |
|---|---|
| Vomiting | Seizures |
| Diarrhea | Incoordination |
| Lethargy | Hypersensitivity reactions (hives, facial swelling, difficulty breathing) |
| Decreased appetite | Collapse |
| Itching | Neurologic signs |
Trifexis Dosage Guide
| Condition | Starting Dose | Maintenance Dose | Administration Notes |
|---|---|---|---|
| Heartworm Prevention, Flea and Intestinal Worm Treatment | Based on dog’s weight (see product label) | Continue monthly dosing based on dog’s weight. | Administer orally, preferably with food. Use appropriate strength based on dog’s weight. Consult veterinarian for specific dosing. |
Trifexis Price With And Without Insurance
| Purchase Context | Estimated Price |
|---|---|
| With Insurance | $160 |
| Without Insurance (U.S.) | $40 |
| From Canada | $123 |
