Two Easy Ways to Start Earning Rewards!
Earn 2X Pals Rewards points at Petco
when you use Petco Pay!
Updated on September 23rd, 2025
Pet's info: Dog | Chihuahua | Male | unneutered | 3 lbs
My dog got a dose of Drontal Plus prescribed by his vet for a confirmed case of tapeworms. How effective is this medication? He also vomited white foam about 10 mins after receiving it (and other meds for colitis), did the dewormer absorbe? I have kids - I'm paranoid! I really want reassurance he will be properly dewormed. Thank you kindly
2 Answers

Answered By Jenna Beyer, DVM, MBA, cVMA
Veterinarian, Certified Veterinary Acupuncturist
Published on August 5th, 2017
Answered By Jenny, DVM
Veterinarian
Published on July 22nd, 2017
Drontal is a good dewormer as it covers tapeworms which it sounds like you are describing. Sometimes it can cause mild, short term diarrhea but generally nothing severe or long term. The medicine will take care of worms. If Harley is eating still and not vomiting or having bloody stool you can monitor him for the day. If it continues or he gets worse then I would have him checked for another reason such as dietary problems or an infection
1Pet Parents found this answer helpful