My dog's preventatives are 3 days late. Is she still protected?

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Ellie should be fine. Missing 3-4 days should not be a critical time period when talking about heartworm prevention. Now missing that dose over longer time periods could potentially cause a problem due to the life cycle of the heartworm and what stages the medicine kills, since the heartworm goes through several larval stages once inside a dog or a cat. The best thing to do in your case is exactly what you did, give the dose as soon as you realize you missed it and of course, contact your vet for their advice. Ellie should be fine. Great question though. I wish you the best of luck with her.

With it being cold in your part of the country right now, I'd say the chance of your dogs picking up fleas is much lower than it would be in the summer. If your indoor environment is clean and flea-free, you and they should be fine until Friday.

No, it is fine to go ahead an apply the flea prevention. Give the next dose 30 days from the day you administer the medication. I hope this helps and please feel free to post any additional questions.

You are correct that the water and the baths will interfere with her Frontline. Even though she will be a little late for the medication, long-term this will not likely cause any effects. After she has her last bath, wait 24 hours to apply the Frontline. I hope this helps and please feel free to post any additional questions.

Wait two more days and it should be safe. Make a note in the calender to give it a month from now so you do not forget. Make a check mark next to the entry when you have given the medication, so you have a record of giving it to your dog. Happy Holidays!

I am so sorry to hear about that. I think it will be fine to wait until Tuesday. A few days likely won't make a difference. I would talk to your vet though and let them to know to ensure they don't want to change their treatment plan any. Every vet clinic does heartworm treatment a little differently. I hope this helps.

No, there is no need to go to the vet for missing the dose. Your dog should be fine. SHould there be microfilariae present, the next dose you gave should kill them. Just keep giving the heartworm medication as prescribed. Your dog will need a heartworm test anyway every year. No worry!