The allergens can include pollen, grass, corn, eggs, fleas, worms, and prescription medication. If your cat’s signs are especially severe, you should consult a veterinarian, and they will likely prescribe your cat strong antihistamines.
However, if your cat is suffering mild symptoms or you want to avoid giving them strong prescription medication, there are alternatives including milder medications and homeopathic remedies.
Below, we have compiled reviews of 9 common medications for cat allergies. Using these reviews, you can find a solution that will help your cat, while you identify and eliminate allergens from their life.
In this article
A Quick Comparison of Our Favorites in 2026
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Best Overall
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Animal Essentials Seasonal Allergy Herbal Formula |
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Best Value
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HomeoPet Nose Relief |
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Premium Choice
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NaturVet Aller-911 Allergy Aid Soft Chews |
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NaturVet Aller-911 Allergy Aid Hot Spot Plus |
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Liquid-Vet Itch & Allergy Support |
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The 9 Best Medications for Cat Allergies
1. Animal Essentials Seasonal Allergy Herbal Formula – Best Overall
Hay fever is an allergic reaction to pollen, which is prevalent in summer. The signs include itchy and red eyes, sneezing and teary eyes, and skin rashes. Animal Essentials Seasonal Allergy Herbal Formula is a cat allergy supplement containing the active ingredients of nettle leaf, eyebright, burdock root, and licorice root.
Animal Essentials also contains vegetable glycerin, water, and grain alcohol. It’s suitable for dogs and cats, and cat owners can give their cats up to 0.25 ml per dose two to three times a day.
Unfortunately, the liquid has a strong smell and appearance, which may make it difficult to convince all cats to consume it. However, it is effective, and a small bottle will provide more than 100 doses for your cat.
- All-natural ingredients
- Reasonable price
- Relieve symptoms of hay fever
- Strong odor
2. HomeoPet Nose Relief – Best Value
This liquid is suitable for dogs, birds, small animals, and cats. It can be given directly or added to food or water, and a single bottle contains enough for 450 drops. Cats require approximately 15 drops per day, and a box will last around a month. HomeoPet Nose Relief is affordable, and we think it’s the best medication for cat allergies for the money.
The natural ingredients have been chosen for their effectiveness in relieving allergies and because they do not cause side effects. Giving your cat HomeoPet Nose Relief liquid is considered safe and effective. This anti-allergen performs well at drying up runny noses and mucus but does not work as well on severe allergic reactions.
- Cheap
- Easy to administer
- Helps dry up runny noses
- Not as effective on severe symptoms
3. NaturVet Aller-911 Allergy Aid Soft Chews – Premium Choice
NaturVet Aller-911 Allergy Aid Soft Chews are soft chews made using natural active ingredients. The chews include flaxseed and fish oil, turmeric root, grape seed, pumpkin, witch hazel, tea tree oil, and aloe vera.
The bottle is expensive but contains 180 soft chews, which should be enough to keep your cat sign-free for up to 3 months. The ingredients contain canola oil, which is considered a controversial ingredient in pet food and supplements. Canola is made from rapeseed, often genetically modified, and the exact effects are unknown.
Some owners prefer to avoid canola oil. It is worth noting that the ingredients also list grape seed extract. While grapes are toxic to dogs, grape seeds are not considered harmful. They are potent antioxidants with good anti-inflammatory properties, making them suitable for treating allergic skin reactions.
As is a relatively common problem with medicines, some cats refuse to eat NaturVet’s chews.
- Contains natural ingredients
- Soft chews should be easy to take
- Expensive
- Contains canola oil
- Not all cats like the taste
4. NaturVet Aller-911 Allergy Aid Hot Spot Plus
NaturVet Aller-911 Allergy Aid Hot Spot Plus is a topical foam for dogs and cats. Its ingredients include witch hazel, tea tree oil, and aloe vera extract. Cat owners are advised to apply between one and three pumps of the foam to affected areas of their cat’s skin. For the best results, you should pat the foam softly once applied. I
t can be used up to three times a day. The ingredients soothe itchiness, redness, and sore spots. It is a relatively inexpensive foam and can work well to reduce itchiness. However, it has a strong tea tree smell, which may prevent some cats from licking it off, but may prove too strong for some cats and owners. The foam may not suit all cats, but it should be easier to apply than a pump-action spray.
- Foam is easy to apply
- Soothes itching and reduces irritability
- Inexpensive
- Strong tea tree smell
- Not all cats will like the foam
5. Liquid-Vet Itch & Allergy Support
Liquid-Vet Itch & Allergy Support is a cat allergy supplement that can be given directly or placed in your cat’s food or water. It contains fish oil, hyaluronic acid, and citric acid, and it has chicken flavor to help make it more appealing to your cats.
However, its strong smell may irritate some cats, but a bottle will last around a month and is cheaper than many other allergy supplements. The omega-3 found in fish oil should help significantly reduce the itchiness and irritability caused by allergies and can cause your cat to scratch and even chew their skin.
You can use Liquid-Vet Itch & Allergy Support as a regular supplement or to ease the reactions while you try to find the source of your cat’s allergic reactions.
- Filled with omega fatty acids
- Includes chicken flavor
- Inexpensive
- Not all cats enjoy it
6. Wondercide Skin Tonic Itch + Allergy Relief
Wondercide Skin Tonic Itch + Allergy Relief is a spray for cats and dogs. Active ingredients include neem, lavender, cedar, and lemongrass oils, which provide relief from the itching skin that accompanies allergic reactions. The spray should be applied generously on the affected area of the skin before being massaged in gently. It can be used several times daily and as long as it provides relief.
The ingredients do not include any artificial additives. It can alleviate the itching caused by allergies, dry skin, bed bug bites, and more. It is more expensive than most other options but comes as a pump or a spray bottle, depending on the size you buy.
Despite the moderately high cost, the Wondercide Skin Tonic Itch + Allergy Relief spray seems to help cats suffering from itchy skin, and most pets don’t mind the smell.
- Natural ingredients
- Skin relief for allergies and other conditions
- Good spray bottle
- Expensive
7. Pet MD Hydrocortisone Spray For Dogs, Cats, Horses
Pet MD Hydrocortisone Spray is a 1% hydrocortisone spray for the rapid relief of itching and skin irritations. It can be used for irritations caused by bites and the itchiness associated with allergies and allergic reactions.
By reducing the inflammation and itchiness of the infected area, it stops the cycle of scratching and irritation. It has no additional perfumes or dyes, and it is a non-stinging formula. The spray is easy to apply, but some cats may not like the hissing noise of the applicator.
The formula can also leave a greasy residue. However, it’s affordable and is manufactured in the USA.
- Easy application
- Relieves itchiness and irritability
- Cats might not like the spray noise
- Leaves a greasy residue
- Won’t work on all allergies
8. Vetflix Herbal Pet Supplement
Vetflix Herbal Pet Supplement is a liquid supplement for dogs and cats. It is made from natural ingredients, including milk thistle, elderberry, and turmeric. The ingredients are grown in the USA, and the supplement is manufactured there, too. Vetflix is designed to help with itchiness, sneezing, swelling, vomiting, and diarrhea.
It is quite an expensive cat allergy supplement, and it has a strong odor that is unpleasant for some cats. If you can convince your cat to take Vetflix, it may relieve some of their allergies.
- Works to relieve symptoms of allergies
- Contains natural ingredients
- Smells strong
- Expensive
9. BestLife4Pets Healthy Skin and Allergy Relief
The BestLife4Pets Healthy Skin and Allergy Relief pills are designed to give your cat relief from itching and fur shedding caused by allergies. The plant and mineral-based formula provides quick relief without using any artificial colors, additives, or other ingredients. BestLife4Pets claims that the small supplement pills are free from odor and taste, so they should be easy for your cat to take.
However, they are expensive, and while the pills might be tasteless, that doesn’t necessarily mean they are easy to give to a cat, as most owners will attest. Grinding or putting them in your cat’s preferred treat may be necessary.
- Relieves itching and biting
- Natural ingredients
- Tiny pills are difficult to give to cats
- Expensive
- Not very effective
Buyer’s Guide: Choosing The Best Medication for Cat Allergies
The best medication for cat allergies can help alleviate redness and itching. It can also help to eradicate severe signs like vomiting and diarrhea. Although a vet can prescribe antihistamines and other prescription drugs, several holistic supplements and other medications can provide temporary relief. However, it’s best to check with the vet before using over-the-counter supplements.
Cat Allergies
Cat allergies occur when your cat’s immune system responds negatively to food, drinks, or environmental factors. Their immune system believes the allergen to be attacking the body, and it responds by fighting off the perceived infection.
Common allergies can include fleas, food products, and certain types of grass. The signs range from mild itchiness and red eyes to severe overgrooming, vomiting, and diarrhea.
Even mild symptoms can become problematic if left untreated. If your cat continues to experience itchiness in a specific area, they may scratch or bite the area excessively, causing it to bleed. If they continue to irritate the area, the sore can become infected, leading to severe side effects.
Treating an allergy early will help to alleviate the reactions. This can allow you to determine exactly what your cat is allergic to and look for alternatives. Some cat allergy medications and supplements are designed to be given long-term so your cat can enjoy lifelong protection.
Symptoms
Cats will show different signs, and they can vary in severity from annoying to life-threatening.
- Itching
- Hair loss
- Skin redness and irritation
- Sneezing
- Swelling
- Coughing
- Runny eyes
- Difficulty breathing
- Vomiting
- Wheezing
- Diarrhea
- Chewing at irritable areas
The most severe reactions affect your cat’s ability to breathe. One of the ways that the body reacts to infection is to cause swelling. If this swelling occurs around the face, throat, or respiratory system, it can prevent your cat from being able to breathe properly. This is serious in all cats, but especially if your cat has a condition like asthma that already makes it difficult for them to breathe normally.
Itching and redness of the skin can start mild, but over time, and with enough scratching and chewing, even mild itchiness can become a serious problem. Eventually, over-licking or chewing at a sensitive area can lead to hair loss. Over time, it can lead to open wounds that can become infected.
What Are The Most Common Allergies In Cats?
Like humans, there are many substances that your cat may be allergic to. The first step to eliminating allergens from your cat’s life is identifying them. If an allergic reaction has started recently, consider anything new in your cat’s life.
Have you changed their diet? Has your cat started visiting somewhere new when they go outside? Are you using a new detergent?
- Pollens: Since your cat’s eyes, nose, and mouth are close to the ground, it is little surprise that hay fever can have a serious impact on a kitty’s health.
- Food: This is a relatively common group of allergens for cats. Some of the most common food allergens include eggs, dairy, beef chicken, and grains, but grain allergies are not too common.
- Fleas: The most common allergy for cats is a flea allergy. Unfortunately, it can also produce a severe reaction, with bites leading to redness, itching, and hair loss.
- Medication: If your cat has recently started a new medication or treatment, it could be the cause of their allergy. Ask your veterinarian for an alternative because they exist for most medications.
What Do Vets Give Cats For Allergies?
- Steroids are a common form of treatment for sore and itchy skin. They are relatively inexpensive, but if you don’t identify what your cat is allergic to, your cat will likely have to have regular steroid injections. The cost can soon add up, may not be covered by pet insurance, and long-term use can lead to severe side effects.
- Other medications can also be used to treat itchiness. They vary in effectiveness, price, and potential side effects.
- Antihistamines, such as Benadryl, can be prescribed for your cat. You should never give them to your cat without a vet’s approval because a large dose can be fatal.
- Antibiotics will not treat the allergy, but they may be necessary if your cat has licked, itched, or chewed their skin and caused open wounds to appear.
- Prescription diets may eliminate some or all possible food allergens from your cat’s diet. They can be used as part of an elimination diet for your cat. This means eliminating all known allergens before reintroducing them gradually. When your cat shows allergic signs, it means that you have identified one allergen.
How Can I Treat My Cats Allergies Naturally?
- Fish oil contains a lot of omega-3 fatty acids, which boost the skin’s immunity and provide anti-inflammatory properties. You will find that fish oil is a common ingredient in many supplements and has the added benefit that most cats like the smell and flavor. Avoid cod liver oil, however, as it is too high in certain vitamins.
- Coconut oil fights the production of yeast. Yeast is a common cause of inflammation. Coconut oil can be used as a topical ointment to rub on sensitive skin.
- Chamomile also prevents inflammation by stopping the chemicals that cause it. It will also kill mild yeast and bacteria. It can be turned into a topical spray and applied to the afflicted area.
Cat Allergy Supplement Guide
You can also buy cat allergy supplements and natural, holistic remedies, including the ones we have reviewed above. They are milder than prescription medication and provide some relief from allergies.
- Liquid – A liquid supplement usually comes in a bottle with a dropper or spray. The liquid can be added to food or, in rare cases, given directly to the cat by spraying in their mouth.
- Pill – Pills are the traditional means of delivering medication to cats and other animals. Smaller pills with no smell or taste can be hidden in a small piece of meat. Alternatively, you can use a pill popper to effectively and safely fire the pill down your cat’s throat.
- Spray – A spray is usually a topical solution applied to irritated or itchy areas. They are relatively easy to apply, but your cat may not like the sound of the applicator.
- Foam – A foam is another topical solution. In most cases, you apply it directly to the affected area of the cat and then rub it or dab it in. Some foams may need to be lathered up before being applied.
- Powder – A powder can be added to food or a treat before being given to your cat.
Our Medication for Cat Allergies Selection Process
Catster’s dedicated team of writers and editors collaborate with expert veterinarians, considering a wide range of factors when selecting the best for cats. These parameters include customer reviews, brand reputation, veterinary experience, and in some cases, hands-on testing. Of course, our cats have a say in the process, too! We strive to select and review the highest-quality products available, to help you choose the best possible product and make the most informed decision for your and your cat’s needs.
Why Trust Catster?
Catster has been a trusted online brand since 2001, so we know a thing or two about medication for cat allergies. We’re a team of cat-loving writers, editors, and veterinarians dedicated to helping you make the most informed decision for your feline. We deeply believe in providing the best information for cat owners to help their cats live their best life possible. We look at reviews from the most trusted sources available, and this, combined with our veterinary team’s experience and expertise, helps us gather the best options on the market. Our team is invested in the welfare and health of cats around the world, and believe that expert knowledge is one of the best ways to achieve this.
Conclusion
While helping your cat avoid allergens altogether is the best approach, it can be challenging to identify the cause of an allergy, especially if your cat goes out every day. While writing the reviews above, we found the best medication for cat allergies was Animal Essentials Seasonal Allergy Herbal Formula because it is inexpensive, effective, and helps combat feline hay fever. While HomeoPet Nose Relief does not prove as effective on severe reactions, it’s cheap and prevents runny noses and mild signs.
Hopefully, our reviews have helped narrow the field of choosing an effective medication for your cat’s allergies.
Featured Image Credit: thodonal88, Shutterstock
