Flea treatment for Shar-Pei with skin folds

A Shar-Pei with deep skin folds is one of those cases where the usual spot-on treatments can genuinely let you down — the folds trap moisture and prevent the product from spreading properly across the skin, which kills their effectiveness. The most reliable fix here is usually an oral treatment rather than anything applied to the coat or skin. A few quick questions: how heavy is your dog, are you in an area where ticks are a concern as well as fleas, and has your vet flagged any health issues we should factor in given their age?

Good to know — managed hypothyroidism is fine here, it doesn't rule anything out. At 25kg in a rural tick area, you need something that covers both fleas and ticks reliably, and given the skin fold issue an oral treatment is clearly the right route. Can I ask — is she currently on any prescription treatments, or are you looking at over-the-counter options? And has she had any previous reactions to flea or tick products?

That reaction makes complete sense — moisture trapped in the folds combined with a chemical spot-on is a recipe for irritation. Given everything — her size, the tick risk, her age, and the skin fold issue — I'd go with NexGard (afoxolaner) chewable tablets. It's a prescription product in the UK, so you'll need a vet sign-off, but many online vet pharmacies like VetUK or PetDrugs Online will issue a prescription quickly after a short consult. It kills fleas before they can lay eggs and covers the main tick species found in the UK, including Ixodes ricinus which is the one you're most likely to encounter in Surrey woodland. Because it's oral, the skin folds become completely irrelevant — nothing touches her skin at all. It's dosed monthly, well-studied in older dogs, and the chewable format means most dogs take it without any fuss. The one thing to mention to your vet given her age: they may want a quick kidney and liver check if she hasn't had one recently, just as routine good practice before starting any new treatment.

NexGard is very well tolerated but a small number of dogs experience mild, short-lived vomiting or loose stools after the first dose — giving it with food usually prevents that. In rare cases some dogs show brief neurological signs like muscle tremors, so if you ever see anything like that stop and call your vet straight away, though it's genuinely uncommon. For a senior dog, just keep an eye on her for the first 24 hours the first time you give it, then it tends to be uneventful from there. The other thing worth doing with a Shar-Pei is checking and gently drying the skin folds weekly regardless — fleas and other irritants can still accumulate in there even with good systemic protection.

Perfect — it's a straightforward conversation and most vets are happy to prescribe it once they know the background. Good luck with her, and do keep up with those fold checks — a dry fold is a happy fold.