Premium Pet Supplements for Dogs & Cats
Your Petjesty makes premium algae-based Omega-3 (DHA) pet supplements — a cleaner, plant-based alternative to fish oil. Omega-3 is the foundation supplement most dogs and cats can benefit from as part of a balanced diet.
Why Omega-3 is the foundation pet supplement
DHA — the key long-chain Omega-3 — supports a shiny coat, supple joints, brain and heart health as part of a balanced diet. Most everyday pet diets are lower in Omega-3 than in Omega-6, so a clean, plant-based top-up is a sensible place to start.
Supplements for dogs
From puppies to seniors, dogs benefit from a steady source of DHA to support skin, coat, joints and brain health. Explore dog vitamins & supplements →
Supplements for cats
Cats can't efficiently make DHA from plant precursors, so algae oil delivers it directly — without fish. Explore cat vitamins & supplements →
How to choose a quality pet supplement
- Purity — traceable ingredients, human-grade quality standards.
- Sustainable sourcing — algae cultivated in controlled environments.
- No fishy smell — plant-based DHA, no fishy taste or residue.
- Suitable for all life stages — puppies and kittens through to seniors.
Shop Petjesty Pure algae Omega-3 →
Related guides
- Best supplements for dogs (UK)
- Omega-3 for dogs: benefits & dosage
- Omega-3 for cats: benefits & dosage
- Fish oil vs algae oil for dogs
- Vegan Omega-3 for pets from algae
Frequently asked questions
What supplements do dogs and cats actually need?
A complete, balanced diet covers most nutrients. The most commonly recommended top-up is Omega-3 (DHA), which supports skin and coat, joints, brain and heart health as part of a balanced diet. Talk to your vet about what suits your pet.
Are algae supplements safe for cats and dogs?
Our algae oil is formulated for cats and dogs of all life stages, from 6 weeks upwards. It is 100% plant-based and free from ocean-borne contaminants. As always, consult your vet if your pet is on medication or a prescription diet.
When should I talk to my vet?
Before starting any new supplement — especially if your pet is on medication, pregnant, very young or very old, or has an existing health condition. Supplements are nutritional support, not a treatment.
Fish oil vs algae oil — what's the difference?
Fish don't naturally produce Omega-3; they accumulate it from algae. Algae oil delivers DHA directly from its plant source, without the ocean contaminants, heavy metals or fishy smell.