What are the misunderstandings about dog deworming?

Jul 26,2025
4Min

The effects of ingredients in anthelmintic drugs

Generally used for pet internal control drugs, the active ingredients milbemycin oxime and praziquantel contained in it enter the body of parasites in the intestines of pets. , can relax and paralyze the parasite's muscles, and can also quickly cause muscle spasms, eventually leading to death.
Among the exogenous drugs, take Fulian Drops as an example, "The drops dropped on the skin will act on the entire organism. The active ingredient is fipronil, and the auxiliary agent is E320 and E321, both are synthetic antioxidants. Animal experiments have shown that excessive use of E320 can change genetic genes, especially intestinal cells. Long-term animal experiments also show that excessive absorption of this Two substances can cause cancer, causing stomach cancer and liver cancer in laboratory rats. They are also used as preservatives in Royal Canin food. Fipronil is a toxic substance that acts on nerves and kills parasites by destroying their central nervous system. It has the effect on parasites. However, the toxin is not only effective against parasites through the blood, but also enters the blood of your pet.

The side effects of anthelmintics are on the nerves

From here we can see that the active ingredients of anthelmintics are toxic substances that act on the nerves. When they cause the death of parasites, they also It will be absorbed through the gastrointestinal tract or skin and partially enter the pet's body, causing certain effects on their nervous system. Relatively speaking, the absorbed dose plays a critical role. The fatal dose for parasites is only a side effect for pets, but the accumulated toxins from frequent use may cause various damages to the health of your pet.
We all have similar experiences. After taking anthelmintics, or even just external sprays or drops to kill parasites, our pets will more or less have some adverse reactions or become tired. , or lethargy, or vomiting, or loss of appetite, or even diarrhea, and other symptoms. These reactions all indicate that your pet is affected by these toxins that act on the nervous system. In order to remove these toxins, your pet’s liver The kidneys must work harder, and frequent overtime work greatly increases the burden on the liver and kidneys and other detoxification organs.
Some brands of deworming pills can even cause more serious problems

Deworming products, including Nicotine, SuperTrust and other anthelmintics, may cause neurological problems in cats and dogs, leading to muscle tremors, movement disorders, epilepsy and even more serious diseases. The reason is that it contains isoxazoline. The brands of anthelmintic drugs containing isoxazoline are:

Bravecto (one tablet to remove), Credelio (super reliable), Nexgard (Nexgard), Simparica.


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