Best Dog & Cat Supplements

Pros

• nordic.com Omega-3 Pet PDP 2026-09-07: Soft Gels / 90 Count - Unflavored listed at $22.95 (aggregate offers from $17.95–$46.95 across soft-gel and liquid sizes). Official 90-count bottle pack shot from Nordic Shopify CDN. Free standard shipping and a 30-day return window named in schema.
• Guaranteed Analysis per 1 Soft Gel (1000 mg fish oil) on this PDP: Crude Fat min 67%; Moisture max 4%; EPA min 11%; DHA min 7%; Total Omega-3 Fatty Acids* min 22%. Ingredients: fish oil (from anchovies, sardines, mackerel, and herring), gelatin, water, glycerin, d-alpha tocopherols (a preservative). No artificial flavors, synthetic dyes, soy, wheat, corn, or dairy stated.
• Soft-gel weight chart on this PDP: 10–19 lb 1; 20–39 lb 2; 40–59 lb 3; 60–79 lb 4; 80–110 lb 5; 111–130 lb 6. Smaller dogs (10–19 lb): puncture and apply oil to food. Dogs 2–10 lb: PDP recommends the 2 oz liquid SKU. Over 130 lb: consult a veterinarian. Do not exceed suggested daily use without consulting your veterinarian. Certificates of Analysis are offered on the page.

Cons

• NASC Quality Seal is not shown on this PDP (Nordic emphasizes lot CoAs and Friend of the Sea on the brand, which we do not score as NASC). Absolute EPA/DHA milligrams are not printed as mg — only percentages of the 1000 mg fish oil soft gel.
• Heart, brain, skin/coat, and joint support lines are maker benefit claims, not proven disease treatments. We did not invent clinical arthritis or allergy cure rates.
• Subscribe-and-save may be offered; one-time $22.95 for 90 soft gels is listed. Liquid sizes are separate SKUs on the same PDP family.

Score breakdown

Specs

Species

Dogs and cats (PDP). Soft-gel chart is dog weight bands; cats are named as an intended species on the product title.

Form

Soft gels, 90 count (default); liquid sizes also on this PDP

Actives

Per soft gel on this PDP: 1000 mg fish oil; EPA min 11%; DHA min 7%; total omega-3 min 22%

Nasc

No — not shown on this PDP.

Msrp

$22.95 Soft Gels 90 Count as listed 2026-09-07

Score Notes

quality 6 = US PDP + amounts (no NASC/proprietary bonus). safety 10 = species, bands, consult/do-not-exceed, under/over exclusions. ease 10 = daily + on-food + 90ct + other sizes. value 9 = $22.95 + count + no required sub + ≤$35.

Pros

• vetriscience.com Calm & Confident 120 Chicken Flavored Chews PDP 2026-09-07: SKU 0900780.120, $36.50, in stock. Composure™ is renamed Calm & Confident on this page. Official FoodScience/VetriScience Salsify pack shot for 0900780.120.
• This PDP names Colostrum Calming Complex®, L-theanine, and thiamine (Vitamin B1) and links View Product Sell Sheet. Official sell sheet 0900780.060/120 family prints per chew: Thiamine 134 mg; Colostrum Calming Complex™ Biopeptide Blend 22 mg; L-Theanine 21 mg. PDP states these calming chews are not a sedative.
• Directions on this PDP: up to 50 lb 1 chew daily; 51–100 lb 2; over 100 lb 3. Daily or as-needed; safe to double or triple in increased stress. Chicken flavor; other flavors/counts sold on the same line. Optional subscribe frequencies; one-time purchase available.

Cons

• Milligrams appear on the linked official sell sheet, not as an HTML facts table on the consumer PDP body. NASC is not shown on the HTML we captured for this PDP (joint SKUs sometimes show Pet’s Sake / NASC — this calming page did not print it in the fetched copy).
• Field-trial and “clinically tested / 30 minutes” language is VetriScience marketing. We scored the label checklist, not an unpublished percent-effectiveness figure.
• Dogs only on this SKU. Cat formulas are separate. $36.50 sits in the $36–$50 value band, not the ≤$35 band.

Score breakdown

Specs

Species

Dogs only (this SKU). Cat Calm & Confident is a separate product.

Form

Soft chews, 120 count, Chicken

Actives

Per chew on official sell sheet linked from PDP: thiamine 134 mg; Colostrum Calming Complex 22 mg; L-theanine 21 mg

Nasc

No — not shown on the fetched PDP HTML.

Msrp

$36.50 120 chicken chews as listed 2026-09-07

Score Notes

quality 7 = US PDP + sell-sheet mg + Colostrum. safety 8 = dogs + bands + not-a-sedative. ease 8 = daily/as-needed + chicken + 120 + other SKUs. value 8 = $36.50 + count + no required sub + $36–$50 band.

Pros

• petnaturals.com Daily Multi for Dogs PDP 2026-09-07: SKU 070029G.150, UPC 026664007841, $24.50, in stock. Official Salsify catalog pack shot. Positions the chew as support alongside commercial, homemade, or raw diets — not as a meal replacement.
• Guaranteed Analysis per chew (3.5 g) on this PDP includes Methionine 10 mg; Calcium 112 mg; Phosphorus 56 mg; Potassium 15 mg; Magnesium 5 mg; Iron 3 mg; Copper 0.3 mg; Manganese 1 mg; Zinc 3 mg; Iodine 0.05 mg; Vitamin A 1000 IU; Vitamin D3 100 IU; Vitamin E 15 IU; B-vitamins; Ascorbic Acid (Vitamin C) 25 mg. Calorie content 11 kcal ME/chew.
• Feeding directions on this PDP: under 25 lb ½ chew daily; 25–75 lb 1 chew daily; over 75 lb 2 chews daily; split AM/PM if more than one. One-time purchase; no required subscription.

Cons

• NASC is not shown on this PDP. Shipping delay note (3–4 weeks) appears on the store page.
• A multivitamin does not fix a poor diet, diagnose deficiency, or replace veterinary bloodwork. “Over 25 key nutrients” marketing is a count of listed nutrients, not a clinical outcome.
• Dogs only on this SKU; cat Daily Multi is separate.

Score breakdown

Specs

Species

Dogs only (this SKU).

Form

Soft chews, 150 count (SKU 070029G.150)

Actives

Full GA on PDP (e.g., calcium 112 mg, vitamin C 25 mg, vitamin E 15 IU per chew)

Nasc

No — not shown on this PDP.

Msrp

$24.50 as listed 2026-09-07

Score Notes

quality 6 = US PDP + mg GA. safety 8 = dogs + bands + under-25 half-chew band. ease 8 = daily + palatability + 150 + other counts. value 9 = $24.50 + count + no required sub + ≤$35.

Pros

• petnaturals.com Calming for Dogs and Cats PDP 2026-09-07: SKU 070028G.160, UPC 026664007834, $22.50, in stock. Official catalog pack shot from FoodScience/Pet Naturals Salsify. Chicken liver flavor named.
• Active ingredients per 1 chew (1.5 g) on this PDP: Thiamine (Vitamin B1) 65 mg; Colostrum Calming Complex® Biopeptide Blend 9 mg; L-Theanine 8.5 mg. Named proprietary Colostrum Calming Complex®.
• Directions on this PDP: Cats 1 chew daily. Dogs up to 50 lb 1 chew daily; over 50 lb 2 chews daily. Daily or as-needed; safe to double or triple in increased stress. One-time purchase; no required subscription.

Cons

• NASC Quality Seal is not shown on this PDP. We do not borrow retailer NASC claims. Shipping note on the page may delay fulfillment (3–4 weeks called out).
• Calming chews are not a substitute for behavior training, a veterinary anxiety workup, or prescription anxiolytics. Maker stress-support language is not an FDA-approved anxiety drug claim.
• 160 count is in the SKU (070028G.160) rather than a large “160 chews” headline on the hero; 30-count siblings exist separately.

Score breakdown

Specs

Species

Dogs and cats (PDP directions).

Form

Soft chews, 160 count (SKU 070028G.160), chicken liver

Actives

Per chew on this PDP: thiamine 65 mg; Colostrum Calming Complex 9 mg; L-theanine 8.5 mg

Nasc

No — not shown on this PDP.

Msrp

$22.50 as listed 2026-09-07

Score Notes

quality 7 = US PDP + mg + Colostrum Calming Complex. safety 6 = species + bands (limited caution language on this PDP). ease 8 = daily/as-needed + flavor + 160 + other counts. value 9 = $22.50 + count + no required sub + ≤$35.

Pros

• zestypaws.com 8-in-1 Multivitamin Bites PDP 2026-09-07: 50 Chews default $24.97 (90/180/270 also). Peanut Butter and Chicken flavors. Official Shopify pack shot.
• Ingredients on this PDP: Proprietary Mobility Blend [Glucosamine HCl (Shellfish), Chondroitin Sulfate (Porcine)] — 550 mg; Fish Oil (AlaskOmega®) — 200 mg; Proprietary Multi Blend [B vitamins, vitamin E, manganese, biotin, etc.] — 25 mg; Bacillus subtilis — 1 Billion CFU; plus Ascorbic Acid and base ingredients. AlaskOmega® named.
• Feeding chart on this PDP: up to 25 lb 1 chew/day; 26–75 lb 2; 76 lb & up 3. Adult and senior dogs named in copy. Subscribe optional.

Cons

• This is a kitchen-sink multi that includes a glucosamine/chondroitin blend — it is not a replacement for the dedicated joint-supplements ranking when mobility is the only goal. NASC not in the fetched product body.
• Individual vitamin milligrams inside the 25 mg Multi Blend are not broken out. Shellfish-source glucosamine.
• Eight wellness areas are marketing pillars, not eight independent clinical proofs.

Score breakdown

Specs

Species

Dogs only (PDP).

Form

Soft chews, 50 count default, Peanut Butter or Chicken

Actives

Per ingredients panel: Mobility Blend 550 mg; AlaskOmega fish oil 200 mg; Multi Blend 25 mg; Bacillus subtilis 1 Billion CFU

Nasc

No — not shown in the fetched product body for this SKU.

Msrp

$24.97 / 50 chews as listed 2026-09-07

Score Notes

quality 7 = US PDP + amounts + AlaskOmega. safety 6 = dogs + bands. ease 8 = daily + flavor + 50 + extras. value 9 = $24.97 + count + no required sub + ≤$35.

Pros

• zestypaws.com Probiotic Bites PDP 2026-09-07: 50 Chews default $24.97 (also 90 / 180 / 270). Pumpkin and Chicken flavors. Official pack shot from Zesty Shopify CDN. Subscribe & Save optional; one-time purchase available. 100% satisfaction / 90-day return language on the brand.
• Ingredients panel on this PDP (Pumpkin): Gut First™ Blend (Bacillus coagulans, Bacillus subtilis, Saccharomyces boulardii) — 6 Billion CFU; Fructooligosaccharides (FOS) — 50 mg; plus named base ingredients. Proprietary Gut First™ named.
• Feeding chart on this PDP: up to 25 lb 1 chew/day; 26–75 lb 2 chews/day; 76 lb & up 3 chews/day.

Cons

• Body copy on the same PDP still says “3 billion CFU per chew” while the ingredients panel prints 6 Billion CFU. We score the ingredients panel and flag the inconsistency — we do not invent a third number.
• NASC is not printed in the product body HTML we captured for this SKU (some other Zesty pages show an NASC footer block; this product JSON body did not). Not a veterinary diagnostic probiotic like culture-based hospital products.
• Dogs only. No keep-out-of-reach / not-a-drug sentence was present in the fetched product body beyond general supplement marketing.

Score breakdown

Specs

Species

Dogs only (PDP).

Form

Soft chews, 50 count default (90/180/270 also), Pumpkin or Chicken

Actives

Ingredients panel: Gut First Blend 6 Billion CFU; FOS 50 mg (PDP also markets 3 billion CFU in body copy)

Nasc

No — not shown in the fetched product body for this SKU.

Msrp

$24.97 / 50 chews as listed 2026-09-07

Score Notes

quality 7 = US PDP + CFU/mg panel + Gut First. safety 6 = dogs + bands. ease 8 = daily + flavor + 50 + extra counts. value 9 = $24.97 + count + no required sub + ≤$35.

Pros

• petnaturals.com Daily Probiotic 60ct PDP 2026-09-07: SKU 0700753.060, UPC 026664875365, $11.50, in stock. Official Salsify pack shot. Natural duck flavor named.
• Guaranteed Analysis per soft chew (1.2 g) on this PDP: Moisture max 13%; FOS (Fructooligosaccharides) 200 mg; Bacillus coagulans 120,000,000 CFU. Calorie content 6 kcal ME/chew.
• Feeding directions on this PDP: Give 1 soft chew per 25 lbs body weight, daily. One-time purchase; no required subscription. 160ct sibling exists on the Pet Naturals catalog.

Cons

• Single-strain Bacillus coagulans at 1.2×10^8 CFU is far below multi-billion CFU soft chews on this list — that is a label fact, not a failure by itself. NASC not shown on this PDP.
• Species is handled as a dog product on the maker catalog; the 60ct PDP copy is casual (“furball”) rather than a bold DOGS ONLY header. Confirm with the label on the jar.
• Shipping delay note may apply. Not a treatment for hemorrhagic gastroenteritis or antibiotic-associated diarrhea without veterinary guidance.

Score breakdown

Specs

Species

Dogs (maker catalog / 60ct dog SKU 0700753.060).

Form

Soft chews, 60 count, duck

Actives

Per chew on this PDP: FOS 200 mg; Bacillus coagulans 120,000,000 CFU

Nasc

No — not shown on this PDP.

Msrp

$11.50 as listed 2026-09-07

Score Notes

quality 6 = US PDP + CFU/mg. safety 6 = dogs + per-25-lb dosing. ease 8 = daily + duck + 60 + extra count. value 9 = $11.50 + count + no required sub + ≤$35.

Pros

• proviable.com Proviable-DC Capsules PDP 2026-09-07: for cats and dogs. Official Nutramax CDN pack shot (proviable-dc-cat-dog-80.png). Multi-strain synbiotic positioning with published studies referenced on the brand hub.
• Guaranteed Analysis per capsule on this PDP: Total Bacteria min 5 billion CFU (Enterococcus faecium NCIMB 30183, Bifidobacterium bifidum NCIMB 30179, Streptococcus thermophilus NCIMB 30189, Lactobacillus helveticus NCIMB 30184, Lactobacillus delbrueckii NCIMB 30186, Lactobacillus casei NCIMB 30188, Lactobacillus plantarum NCIMB 30187). Ingredients list FOS and gum arabic as prebiotic carriers.
• Directions: Dogs and Cats (all sizes) — 1 capsule daily or as directed by your veterinarian; may be sprinkled on food. Store ≤77°F out of direct sunlight. Keep out of the reach of children.

Cons

• No consumer USD on proviable.com (Where to Buy only). We do not invent Chewy/Amazon prices — value score is capped. Capsule count is not printed as a priced SKU on this PDP.
• “#1 Veterinarian Recommended Supplement Company” is a Nutramax survey line — not scored. Proviable-Forte (10 billion CFU) is vet-channel and was not used as this OTC row.
• NASC Quality Seal is not shown on this PDP. One capsule for all sizes means no weight-band titration on the label.

Score breakdown

Specs

Species

Dogs and cats (PDP).

Form

Sprinkle capsules (OTC Proviable-DC)

Actives

5 billion CFU total bacteria / 7 named strains per capsule (PDP); FOS prebiotic in ingredients

Nasc

No — not shown on this PDP.

Msrp

Not listed on proviable.com 2026-09-07

Score Notes

quality 6 = US PDP + CFU. safety 5 = species + cautions (no weight bands). ease 5 = daily + sprinkle (no maker count/USD pack). value 2 = no maker USD + no required sub only.