Dog treats for hypothyroidism — no soy or iodine

Hypothyroidism in dogs adds a real layer to treat selection — soy is a known goitrogen that can interfere with thyroid hormone uptake, and high-iodine ingredients like seaweed, kelp, and most fish skin can complicate things further. The best treats for a thyroid-managed dog are single-ingredient, land-animal proteins with nothing added. What size is your Samoyed, how active is he or she day to day, and are these treats mainly for training or general rewarding?

That's a sensible flag from your vet. At 25kg and 4–5 treats a day, you want something small enough not to add meaningless calories, with absolutely nothing that touches her thyroid load. No soy, no fish, no kelp, no added minerals. Has she had any digestive sensitivity — loose stools, any intolerances you've noticed — or is her gut generally fine?

Chicken is ideal here — it's low in iodine, soy-free by nature, and Samoyeds generally do well on poultry. I'd go with Lily's Kitchen Chicken Treats for Dogs. They're made from 65% chicken, air-dried, no soy, no fish derivatives, no added iodine sources, and no unnecessary fillers. The pieces are small enough for a daily reward without tipping her calorie balance. Ingredients are clean and transparent, which matters when you're managing a condition and need to actually trust what's on the label. Available on Amazon UK and widely stocked.

Worth a quick glance: they do contain rosemary extract as a natural preservative, which is fine for most dogs but occasionally flagged in epileptic dogs — not relevant here, but good to know. No soy, no fish meal, no seaweed. The full ingredient list is short and readable, which is exactly what you want. I'd still mention the switch to your vet at her next check-in, just so they have the full picture alongside her thyroid monitoring. But for day-to-day rewards with her restrictions, these are a solid choice.

It's an under-explained area. Kelp and seaweed show up in a surprising number of 'natural' treats as a mineral supplement, and the labels don't always make it obvious. Stick to land-animal, single-ingredient treats and you sidestep most of the risk. Hope she enjoys them.