Buy Fenbendazole 150 mg usually has no side effects at normal doses. Sometimes, substances launched with the aid of the death parasites may cause an allergy, especially if fenbendazole is given at higher than normal doses. If your pet exhibits signs of an allergic reaction (facial swelling, itchiness, hives, diarrhea, seizures, or shock), seek veterinary care immediately.

Salivation, vomiting, and diarrhea can also occur in puppies or cats receiving this remedy.

This slow-acting medication should wear off after a few days, though the effects may last longer in pets with liver or kidney disease.