Your dog is scratching again. You're standing in front of a shelf full of bottles, and every label sounds the same.

Picking the wrong medicated shampoo wastes money. It can also leave your pet's skin no closer to feeling comfortable.

This guide breaks down what a medicated shampoo for dogs and cats does, what each active ingredient is formulated to support, and how to buy with confidence. Stratford Animal Care formulates medicated shampoos used across the veterinary supply chain, so this comparison comes from label science, not guesswork.

Shop medicated shampoos for dogs and cats once you know what to look for.

Is a Medicated Shampoo Actually What Your Pet Needs?

A medicated shampoo contains an active ingredient, like chlorhexidine or ketoconazole, formulated to help support skin balance. A regular pet shampoo simply cleans the coat.

Not every itch calls for a medicated formula. Dry winter skin, dust, and mild odor often respond to a gentle cleansing shampoo instead.

A medicated formula may help when skin looks irritated, flaky, or oilier than usual. These are common signs your pet's skin balance needs extra support.

Talk to your veterinarian before starting any medicated shampoo for dogs. A quick check helps confirm which formula fits your pet's needs.

How to Match the Active Ingredient to Your Pet's Skin Support Needs

Every active ingredient is formulated differently. Matching the right one to your pet's needs makes all the difference.

Chlorhexidine

Chlorhexidine is a cleansing agent formulated to help support the skin's natural balance and reduce odor.

Stratford's 4% Chlorhexidine Medicated Shampoo delivers a full-strength formula for pets needing extra skin support.

Ketoconazole and Miconazole

These ingredients are formulated to help support skin balance in pets prone to oiliness or a musty coat odor.

Benzoyl Peroxide

Benzoyl peroxide is formulated to help support clear pores and manage oily, flaky skin.

Combination Formulas

Chlorhexidine paired with ketoconazole offers broader skin support in one wash. This dual-formula shampoo for dogs and cats suits pets with mixed skin and coat needs.

Explore the full breakdown in our shampoo ingredient comparison guide to narrow your choice further.

Prescription vs. Over-the-Counter: What's the Difference?

Whether a medicated shampoo requires a prescription depends on the specific product, active ingredient, formulation, labeling, and regulatory status. Do not assume that a higher concentration automatically means a product requires a prescription.

Is It Safe to Use the Same Medicated Shampoo on Dogs and Cats?

Many medicated shampoo formulas are labeled safe for both dogs and cats, but always check the label first. Never use a dog-only formula on a cat without confirming the label.

Cats process certain ingredients differently than dogs. A shampoo labeled only for canine use should stay off cats entirely.

Stratford labels formulas clearly by species so you never have to guess.

How Often Should You Use a Medicated Shampoo?

Medicated shampoos are used one to two times per week, left on the coat for 5 to 10 minutes before rinsing. Overuse may affect your pet's skin balance.

Contact time matters as much as frequency. Rinsing too soon means the formula doesn't get to work fully.

If you notice increased dryness, flaking, redness, or other changes, stop and ask your veterinarian whether the product is appropriate. 

What to Check Before You Buy: A Quick Label Checklist

Use this checklist before adding any medicated shampoo to your cart.

• Confirm the active ingredient and percentage strength

• Check the species label: dog, cat, or both

• Look for clear contact-time instructions

• Confirm the formula matches your pet's specific skin support needs

• Ask your veterinarian if you're unsure which formula fits

Once you know what to look for, browse Stratford's medicated shampoo formulas and shop by active ingredient.

Why Pet Owners Choose Stratford's Medicated Formulas

Stratford Animal Care manufactures formulas used across veterinary clinics and direct-to-consumer channels alike. Products are labeled with the active ingredients and concentrations for clear product information. 

Every shampoo lists exact active ingredient percentages. No vague marketing claims, just formulas built around clear label science.

From the Keto-C line to full-strength chlorhexidine formula.

Shop medicated shampoos and sprays and give your pet's skin the targeted support it needs.

Frequently Asked Questions

Do I need a vet prescription for medicated shampoo?

Not always. Many chlorhexidine, ketoconazole, and benzoyl peroxide shampoos are available over the counter, though a veterinarian can help confirm which formula fits your pet's needs.

How long should medicated shampoo stay on my pet's coat?

Contact time varies by product. Follow the exact instructions on the label before rinsing. Check your product label, since contact time varies by formula and strength.

Can medicated shampoo affect my pet's skin if overused?

Frequent use may affect the skin's natural balance. Stick to the labeled frequency and check with your veterinarian if you notice changes.

What's the difference between chlorhexidine and ketoconazole shampoo?

Chlorhexidine is a cleansing agent that helps support skin balance and reduce odor. Ketoconazole is formulated for pets prone to oiliness. Many formulas combine both for broader support.

Is medicated shampoo safe for cats?

Only if the label specifically lists cats as an approved species. Always confirm before applying any dog-labeled formula to a cat.

How do I know which formula my pet needs?

A veterinary check can help identify your pet's specific skin support needs. That guidance points you to the right formula.

Talk to Your Veterinarian, Then Shop with Confidence

A quick vet check takes the guesswork out of choosing. Once you know what your pet needs, shopping becomes simple.

Shop Stratford's full medicated shampoo collection and give your pet's skin the formula it's been missing.