Vitamins & Supplements

(159 results)
Purina® Pro Plan® Veterinary Cat Supplement - Hydra Care 3 oz Liquid Sachets, Liver Flavor, 12 ct
(550)
$14.99
$17.99
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Nutramax® Dog & Cat Proviable Probiotics & Prebiotics Digestive Health Supplement, 30 Count
(103)
$19.99
$23.99
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Pet Honesty Cat Treatment - Hairball & Skin Support Crunchy & Creamy Chews, Chicken Flavor, 3.7 oz
2 sizes
(319)
$15.99
$16.99
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Zesty Paws Dog & Cat Wild Alaskan Omega-3 Skin & Coat Support - Pollock & Salmon Oil, 8-32 fl oz
3 sizes
(2156)
$15.97
$16.99
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Nutramax® Cosequin® Cat Supplement - Joint Health, Skin & Coat Soft Chew, Glucosamne, Omega-3, 60 ct
(164)
$13.99
$15.99
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Nutramax® Proviable Cat Supplement - Probiotics & Prebiotics, Daily Digestive Support, 30 capsules
(33)
$22.99
$24.99
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PetAg® Cat Supplement - Hairball Solution Easy to Feed Gel, 6 Months & Older Cats, 3.5 oz
(229)
$12.74
$13.99
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Pet Honesty Cat Supplement - Immune Support Lysine Crunchy & Creamy Chews, Chicken Flavor, 3.7 oz
(377)
$15.99
$16.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
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Pet Honesty Dog & Cat Wild Caught Omega-3 Fish Oil Supplement, Glossy Coat & Healthy Skin - 16 fl oz
(238)
$29.99
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HomeoPet® Cat Supplement - Natural Urinary Tract Support - UTI+, 15 ml
(140)
$19.49
$19.99
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Rocco & Roxie Cat Supplement - Kidney & Urinary Tract Support Crunchy Chews, Chicken Flavor, 3.7 oz
(157)
$14.99
$16.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Pet Honesty Cat Supplement - Daily Multivitamin Crunchy & Creamy Chews, Chicken Flavor, 3.7 oz
2 sizes
(86)
$15.99
$16.99
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Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Save 10% OFF ALL Pet Honesty supplements with code PETHONESTY10
Rocco & Roxie Cat Supplement - Probiotic & Digestive Support Crunchy Chews, Chicken Flavor, 3.7 oz
(163)
$14.99
$16.99
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Pet Honesty Cat Calming Supplement, Stress Relief, Chicken Crunchy Creamy Chews, 30 Days, 3.7 oz
(350)
$15.99
$16.99
Save 10% OFF ALL Pet Honesty supplements with code PETHONESTY10
VetIQ Cat Probiotic Single-Serve - Treats Diarrhea & Food Sensitivity, Chicken Flavor, 30 packets
(95)
$23.99
$26.99
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YumWelll Cat Supplement - Probiotic & Digestive Support Soft Chews, Duck Flavor, 60ct
(66)
$10.29
$14.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
YumWell Cat Treatment - Hairball, Skin, & Digestive Support Soft Chews, Chicken Flavor, 60 ct
(61)
$9.99
$14.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Nutramax Dog & Cat Cobalequin Chewable Tablets B12 Supplement with 5- MTHF, 45 Count
(0)
$24.99
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Nutramax® Cosequin® Cat Supplement - Joint Health with Glucosamine, Skin & Coat Support, 55 capsules
(41)
$21.99
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Fera Pets Dog & Cat Probiotics Powder with Prebiotics, USDA Organic, Gut Health Support, 60 Scoops
(622)
$29.95
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kin+kind Healthy Poops Digestive Supplement for Dog & Cat, Fiber & Prebiotic, Pumpkin, 4 & 8 oz jar
2 sizes
(4)
$13.99
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Nutramax® Dasuquin® Cat Supplement - Joint Health with Glucosamne, Chondroitin & ASU, 84 capsules
(4)
$27.99
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Nutramax® Cosequin® Cat Supplement - Joint Health with Glocosamine for Senior Cats, 60 capsules
(0)
$19.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Nutramax® Dasuquin® Cat Supplement - Joint Health Soft Chews, Glucosamne, Chondroitin & ASU, 84 ct
(0)
$17.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
VetriScience Cat Supplement - Ultimate Strength Lysine Immunity Health Powder, 60 servings
(0)
$36.09
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Royal Canin Cat Supplement - Probiotics for Digestive & Immune Health Powder Packets, 7-30 ct
2 sizes
(428)
$9.99
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Purina® Pro Plan® Veterinary Cat Supplement - Hydra Care 3 oz Liquid Sachets, Liver Flavor, 12 count
(2)
$19.79
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Fera Pets Dog & Cat Mushroom Supplement, USDA Organic, Cognitive & Immune Health, 120 Scoops
(160)
$34.95
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Fera Pets Dog & Cat Liquid Fish Oil - Supports Skin, Joints, Heart Health, 16 fl oz
(334)
$39.95
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Zesty Paws Cat Mousse Supplement - Allergy & Immune Support Lickable Puree, Chicken Flavor, 14ct
(278)
$16.59
$18.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
Zesty Paws Cat Mousse Supplement - 8-in-1 Multivitamin, Gut & Heart Lickable, Chicken Flavor, 14ct
(284)
$16.59
$18.99
Save 30% when you buy 3+ dog & cat supplements thru 11/15, online only
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Cats can sometimes benefit from cat vitamins and supplements added to their diet to support specific health considerations or just to support their strength and health so they can live their best life. Pet parents can find all of the cat vitamins and supplements they need at PetSmart. Remember, it is always important to talk to your vet before making changes to your cat’s diet.  
Our selection of cat vitamins and supplements help to support a variety of health considerations including: 
Allergies
Bladder Care
Digestive Care
Gastrointestinal Care
General Health 
Hairball Control
Hip/Joint Care
Immune Support 
Skin/Coat Health
Stress/Calming Care
Weight Care
And More  
There are options in the form of chews, oils, food additives, and more to meet the needs of your cat. Need other cat dental and wellness care products while you’re shopping? PetSmart also carries cat toothbrushes, cat dental treats, cat hairball remedies, kitten milk replacers and more.  
PetSmart also offers convenient shopping with curbside or in-store pickup. Need something today? We have select items available for same-day delivery in most areas powered by DoorDash. For items you purchase frequently, PetSmart has Autoship that automatically delivers the items you want to your door as often as you’d like. Check the website to see which items are eligible.