This is a specific conversation about Dog supplements — what's actually worth it — ask about yours and get one honest answer for your exact situation.
inparticular.ai
Fish oil causing soft stools is one of the most common complaints I hear — it's almost always a dose or formulation issue, but either way, if your dog's gut doesn't tolerate it well, there's no point persisting. The supplement market for dogs is enormous and mostly unnecessary — most healthy dogs on a complete diet don't need anything extra, and the ones that do usually need something specific. So before I point you anywhere: what's the Springer's name, and what are you hoping omega-3s will actually do for him or her? Joint support, coat condition, something else?
She's called Bramble, she's five. Her coat's been a bit dull and she's started scratching more than usual. The vet said she's healthy, no allergies diagnosed, just suggested we try omega-3s. We did fish oil capsules for about three weeks and her stools went really soft, so we stopped.
inparticular.ai
That makes sense — dull coat and scratching in a healthy Springer without a diagnosed allergy is a pretty classic presentation for a diet that's slightly lacking in omega-3s, especially if she's on a dry kibble. Fish oil is effective but the liquid fats can genuinely irritate some dogs' guts, particularly if the dose crept up too fast or the oil wasn't fresh. A few quick questions: what are you feeding her currently, and roughly what dose of fish oil were you giving — was it one capsule, two, and what size?
She's on Purina Pro Plan Adult, medium breed. We were giving her one 1000mg capsule a day, which I think is what the pack said for her size. She's about 18kg.
inparticular.ai
Pro Plan is a decent complete food, so she's not starting from zero, which means she genuinely doesn't need a huge omega top-up — just enough to shift the balance a bit. At 18kg, 1000mg of fish oil is actually a pretty conservative dose, so if that still caused loose stools, her gut is just sensitive to the fish oil format specifically. The good news is there's a clean alternative: flaxseed oil. It delivers ALA omega-3 rather than the EPA and DHA you get from fish, but for skin and coat issues in a dog without a serious inflammatory condition, it works well and is much gentler on digestion. I'd recommend Grizzly Omega Health for Dogs — it's a flaxseed and salmon oil blend, but the flaxseed carries most of the load and the salmon oil content is low enough that most sensitive dogs tolerate it without any stool changes. Start with half the recommended dose for the first week and build up. If you want to avoid fish entirely, cold-pressed flaxseed oil from a human health brand works too — just buy it fresh and refrigerate it.
That sounds promising. Is flaxseed oil as good as fish oil though? I've read mixed things.
inparticular.ai
Honestly, it depends what you're treating. For serious joint disease or inflammation, EPA and DHA from fish oil are more bioavailable and more effective — dogs convert ALA from flaxseed into EPA and DHA less efficiently than humans do. But for coat condition and mild skin irritation in an otherwise healthy dog? The conversion is usually sufficient, and plenty of Springers do really well on it. Given that Bramble is five, healthy, and you're just trying to address a dull coat rather than manage a medical condition, flaxseed-based oil is a perfectly reasonable choice. If you try it for eight weeks and see no improvement in her coat, that's the point to go back to the vet and ask about a lower-dose fish oil approach or investigate whether something else is going on.
Eight weeks feels like a long time to wait. Would I see anything sooner?
inparticular.ai
You might see the scratching settle down in three to four weeks if it's genuinely omega-related. Coat condition takes longer because you're waiting for new hair growth — the existing coat doesn't change, so the improvement shows as the new growth comes through, which is why eight weeks is the honest timeline. If the scratching doesn't improve at all by week four, it's worth revisiting whether something else is driving it. But give it a proper run before drawing conclusions.