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Dr. Andy
Dr. Andy, Medical Director
Category: Veterinary
Satisfied Customers: 30041
Experience:  UC Davis graduate, Interests: Dermatology, Internal Medicine, Pain Management
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Heartworm med and frontline were due on July 1st for my 8mo

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Heartworm med and frontline were due on July 1st for my 8mo lab pup, he just came home from vet Monday after contracting full blown Parvo . Can I give him the HW med late since he's still on small meals, but put FL on him now for fleas or should I just wait longer? He has just started eating regularly in the past 2 days but still on metronidazole.
Welcome! I would be happy to assist you. I am a 2003 graduate from UC Davis and a Medical Director of a veterinarian practice.

It is not a problem, at all, to wait a few extra days...even a few weeks...on giving the flea control or heartworm preventative. Not concerned at all.

Certainly, contact your vet to confirm they are okay with this plan. But, heartworm disease does not suddenly get acquired because you are delayed a few weeks on preventative. Some flea control products, even if they have been applied before, can cause reaction. So, worth waiting a bit to ensure fully recovered.

Good Luck
Dr. Andy

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Customer: replied 5 years ago.

Thanks so much! He's been current since 6 wks on HW prev and frontline so at least I know it's okay to wait awhile. Will just check with our vet about flea control while he's recovering....sure don't want to poison his system further or compromise recovery in any way. Have a great week!