Dog Skin & Coat Supplements: Omega-3 & Fish Oil Guide (2026)

Dry, flaky skin, excessive shedding, and a dull coat are some of the most common complaints dog owners bring to their vet — and diet is often part of the picture. Below we've compared supplements built around omega-3s and salmon oil, the ingredients most commonly used for canine skin and coat support. See our ranked top picks for a quick comparison.

Signs Your Dog May Benefit From Skin & Coat Support

Dry, flaky, or visibly irritated skin
Excessive shedding beyond normal seasonal changes
A dull, brittle coat that's lost its shine
Frequent scratching, itching, or paw-licking, including seasonal flare-ups
Hot spots or patches of thinning fur

Persistent skin irritation can also signal allergies, parasites, or an infection requiring veterinary treatment — a supplement supports skin health, but it doesn't replace a proper diagnosis.

What to Look For in a Skin & Coat Supplement

Omega-3 fatty acids (EPA/DHA) — the most widely used nutrients for skin and coat health
Salmon or fish oil — a common, well-tolerated source of omega-3s
Sourcing and freshness — fish oils go rancid; look for cold-pressed or freshness-sealed formulas
Dosing matched to your dog's weight — check the label against your dog's actual size
Liquid vs. capsule format — liquid pumps are easy to mix into food, capsules are easier to dose consistently

AniForte Salmon Oil for Dogs & Cats

Cold-pressed salmon oil with no additives, from the same established German brand as our joint-care pick, formulated specifically to support skin and coat health.

~€18 (est.)

DIBO Salmon Oil for Dogs & Cats

Salmon oil with a pump dispenser for easy dosing, rich in omega-3 and omega-6, with a strong 4.6/5 average across over 2,000 reviews.

~€9 (est.)

Pets Purest Salmon Oil for Dogs

The single best-selling salmon oil found in this niche by review volume, an omega 3-6-9 fish oil supplement for coat, immune support and joint/brain health.

~€15 (est.)

ReaVET Salmon Oil for Dogs

Fresh-bottled salmon oil with high omega-3 content (17.6%) to support skin health, coat shine and reduce itching, freshly produced in Germany.

~€15 (est.)

How We Evaluate Skin & Coat Supplements

We check omega-3 EPA/DHA concentration rather than just total oil weight, look for freshness or oxidation safeguards since fish oils go rancid, and read through real owner feedback on whether skin and coat actually improved. We don't accept payment for placement.