Protecting or Poisoning? 5 Important Facts About Long-Term Tick & Flea Medication
- Author: FurryVN on
- News
Long-term tick and flea medications, such as chewable tablets or spot-on treatments, are becoming more common thanks to their convenience and lasting effect. However, besides their benefits, these products may also carry certain risks that many pet owners are not aware of.
Below are 5 important facts about long-term tick and flea medications that every dog and cat owner should know before using them.
1. Some medications contain ingredients that affect the nervous system
Many tick and flea products today contain ingredients from the isoxazoline group. These chemicals are designed to kill parasites by affecting their nervous system.
However, these substances can also affect pets — especially those that are more sensitive. Nervous system side effects such as shaking, loss of balance, or seizures have been reported in some cases after using these medications.
2. Side effects are more common than you think
Even though they are approved for use, long-term flea and tick medications can still cause side effects like:
- Vomiting, diarrhea
- Loss of appetite, tiredness
- Skin irritation or itching
- Unusual nervous system behavior
Side effects may happen even when the medication is used correctly and at the right dose. That’s why it’s important to observe your pet carefully after each use.
3. Not all pets are suitable for long-term treatment
Long-term tick and flea medications are not suitable for every pet. Special caution is needed in cases such as:
- Pets that are very young or old
- Breeds that are known to be sensitive
- Pets with liver, kidney, or heart issues, or a history of seizures
In these situations, it’s best to consult a veterinarian before using any flea and tick product.
4. There are safer alternatives available
If you want to avoid long-term chemical treatments, there are other ways to protect your pet, such as:
- Flea collars
- Natural sprays or essential oils
- Monthly spot-on products
- Regular bathing and cleaning with flea shampoos
These options may be safer for sensitive pets or homes with young children, and help reduce the risks from strong chemicals.
5. The FDA has issued warnings on some products
The U.S. Food and Drug Administration (FDA) has released safety warnings for some flea and tick products containing isoxazoline. Products like Nexgard, Bravecto, Simparica, and Credelio were mentioned in these warnings.
They are not banned, but the FDA advises pet owners to use them with caution, especially if the pet has a history of seizures or nervous system issues.
Conclusion
Long-term flea and tick medications are not always bad. In many cases, they work well and are safe. But what matters is knowing exactly what you're giving your pet. Since pets can’t tell us how they feel, it’s up to us to make the best decisions for their health and safety.
