Health & WellnessWhat flea prevention is safe for my 4lb dog and what supplements?
Hello and thank you for reaching out to Petco Pet Education Center, formerly Petcoach. The Seresto collar is a flea and tick preventative that is safe for small dogs. It is a collar that provides up to 8 months of prevention. K9 Advantix II is also safe for dogs that are 4 pounds, and is a topical medication that is applied monthly. I recommend reaching out to your local veterinarian to see what products they have for the tiny dogs :) I do not recommend using a preventative that can be purchased from a food or pet store or online, as these are NOT safe or effective for use in dogs. Omega-3 supplements are generally very safe for dogs, but should be used in moderation as they are very high in fat. I hope this is helpful!
Updated on September 24th, 2025
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