SKU: PRSP501 FDA NDC: 68703-013-80


Homeopathic remedy to relieve the symptoms of colds and respiratory infections in pets

  • Relieves and prevents colds and respiratory infections in pets
  • Reduces symptoms of sneezing, coughing, watery eyes and nose
  • Decreases recovery time from respiratory infections
  • Prevents colds by strengthening the immune system
  • Stops the recurrence of secondary infections
  • Promotes optimal lung functioning for easy breathing
available now in multiple forms. Please choose below.

Price: $32.95
Price: $65.90
Save $32.95 (33%)
My Persian had a hard time breathing and eating at the same time and was becoming very thin. After a week of Respo-K she was breathing great...She's putting on weight and really enjoying life... -Bonnie, MI, USA

What is Respo-K?

Respo-K is a safe, non-addictive, FDA-registered 100% natural homeopathic OTC medicine formulated especially for pets to relieve colds and respiratory ailments and strengthen immunity to prevent the recurrence of secondary infections of the sinuses or lungs.

Respo-K is an excellent companion to homeopathic AmazaPet™, as it improves respiratory function and reduces asthmatic symptoms in pets. Used together, Respo-K and AmazaPet can provide immediate symptomatic relief of respiratory infections and asthma in pets for easy breathing by improving overall respiratory health and lung functioning!

Respo-K is presented in two convenient forms, tablets or spray, and either form may be taken depending on your pet's preference. Both forms are easy to administer without fussing or fighting. The tablets can be crushed and sprinkled on the tongue, dissolved in water or given as whole tablets, while the spray can be administered directly into your pet’s mouth or sprayed on their food or water.

All PetAlive homeopathic products and biochemic tissue salts are manufactured in a FDA- and GMP-registered pharmaceutical facility under the supervision of qualified homeopaths and responsible pharmacists. Individual ingredients are listed in the Homeopathic Pharmacopoeia of the United States (HPUS).

Respiratory infections in pets

If you have noticed signs of lethargy, coughing, sneezing, fever and runny eyes or nose, then your pet is probably suffering from a cold or upper respiratory infection. This is an infection of the nose, throat and upper airways similar to when humans get a cold or flu. Cats are particularly prone to respiratory infections, but dogs can also contract them, including the common problem of kennel cough.

You may also notice that your pet has stopped eating; this happens particularly to cats because their appetites are primarily driven by smell. If a cat’s nose is blocked and he cannot smell, he will probably become pickier about what he will eat or stop eating altogether for a few days.

Like humans, pets are also susceptible to secondary sinus and chest infections that can result from an untreated cold or initial upper respiratory infection.

Although respiratory infections usually resolve within about 7-10 days, very young or very old pets may be at serious risk when infected with a cold or respiratory infection. For this reason, one should never ignore a pet’s illness. Prompt attention and treatment will save your pet much discomfort and, in weaker animals, may even save their life.

What causes respiratory infections in pets?

Various harmful organisms like viruses and bacteria can cause upper respiratory infections in pets and the nose, eyes, throat and sinuses may all be involved. These may be contagious among pets, but the organisms that affect pets are usually different from those affecting humans so catching a cold from your pet, or the other way around, should not be a concern.

Viruses and bacteria will cause illness much more readily in pets with weakened immune systems caused by another illness, poor diet and unhealthy lifestyle or advanced age.

The natural way

Antibiotics are the usual treatment for respiratory infections and are generally effective in clearing bacterial infections. While antibiotics are not effective in viral infections like colds and flu, they are often prescribed prophylactically in order to prevent secondary infections (which are often bacterial).

Despite their initial efficacy, the downside of antibiotic drugs is that they reduce immune functioning, making your pet vulnerable to recurrence or other illness and infection. A vet may also prescribe medications (e.g. decongestants) for relief of congestion and other symptoms.

Natural remedies can help to safely reduce your pet’s unpleasant symptoms during an upper respiratory tract infection and cut recovery time as well as strengthen the immune system to prevent recurring infection. Due to the high safety profile of the ingredients, our natural remedies are also free of side effects.

Additionally, natural remedies can help to strengthen the respiratory system, including the nose, throat and lungs, as well as promote a healthy immune system, and have been used for generations to encourage respiratory health and support the lungs and sinuses.

Dietary recommendations for optimal health and immune functioning:

  • Many holistic vets will agree that the more raw food (as opposed to cooked meals or dried commercial pet food) the animal eats, the fewer general health problems there will be. Ideally, the best diet for a cat or dog is one which most closely resembles that which he would find in the wild.
  • For cats, who are largely carnivorous, this should consist of mainly raw meat (minced beef and chicken, chicken livers) mixed with a little bone meal and a small amount of some grated carrot or finely chopped greens like spinach.
  • Dogs will do well if more chopped and grated raw vegetables are added to their diets. We also recommend raw meat and raw bones for dogs, mixed with grated raw vegetables and chopped salads.
  • A teaspoon or two of olive oil added to the meal every day (depending on size) will also be beneficial. Do not give your animals any milk at all - nor products containing sugar.
  • Remember that you should not try to change your pet's diet overnight, especially if the animal is elderly. Slowly introduce new foods and allow the digestive system to become accustomed to the new diet.

What are the Ingredients?

Respo-K is a 100% homeopathic formula and contains the following ingredients in therapeutic dosage: Calc sulph (6C), Ferrum phos (6C), Hepar sulph calc (12C), Sambucus nig (3X), Verbascum (3X).

  • Calc sulph (6C) is a biochemic tissue salt that is useful in relieving conditions including all infections, and also speeds up the natural healing process. Calc sulph can be used to relieve coughs, especially when phlegm is thin or watery, and treats sore, irritated throats.
  • Ferrum phos (6C) is another biochemic tissue salt that has many uses in the body. The most important benefits are in the ability of Ferrum phos to combat all types of infection and inflammation. Ferrum phos also helps to strengthen the walls of the blood vessels and thus improves the body's ability to distribute oxygen-rich blood and iron to all cells, thereby facilitating healing. Ferrum phos is recommended at the first stage of any infection for fast resolution of the symptoms.
  • Hepar sulph calc (12C) is a homeopathic remedy for infections, skin ailments, earaches, sore throats and rattling coughs. It is particularly useful in inflammation of the throat and larynx, bronchitis and tonsillitis. It also accelerates the natural healing processes in the body.
  • Sambucus nig (3X) is a widely used homeopathic remedy for coughs, colds and flu. As a diaphoretic herb (causing perspiration) it is useful for relieving fever. It has also been studied for its ability to support healthy mucus levels in the nasal passages (Ueno K, Wang ZH, Hanamure Y, et al. “Reduced sialylation of glycoproteins in nasal glands of patients with chronic sinusitis.” Acta Otolaryngol 1997; 117(3):420-423.).
  • Verbascum (3X) is a homeopathic remedy highly regarded for its ability to address blocked noses and chests and help facilitate easy natural breathing. These properties make Verbascum an excellent remedy for infections of the respiratory tract. This herb has also been proven to be especially useful for irritating coughs and bronchial congestion. It has been studied for its ability to support chest and nasal health (Serkedjieva, J. “Combined antiinfluenza virus activity of Flos verbasci infusion and amantadine derivatives.” Phytother Res 2000; 14(7):571-574.).

This homeopathic remedy is an OTC medicine registered with the Food and Drug Administration (FDA).

PetAlive is the leading brand of natural remedies known for safe, effective and quality products. Our remedies are formulated by natural health experts and produced under the highest pharmaceutical standards in FDA-registered, GMP certified facilities. We utilize the finest quality ingredients that are officially monographed in the Homeopathic Pharmacopoeia of the United States (HPUS).

PetAlive homeopathic products and biochemic tissue salts never contain any animal products, gluten, artificial colors, flavors or preservatives, and are not tested on animals. Our products are always backed by our One Year Unconditional Money Back Guarantee.

How do I use Respo-K?

Tablet Form

Respo-K tablets may be given whole or crushed and mixed with food or a treat, depending on your pet's size and preferences.

Administer 3-5 times daily for 10-15 days as follows:

Cats and Dogs under 20 lbs: 1 tablet
Dogs 20-50 lbs: 2 tablets
Dogs over 50 lbs: 3 tablets

Continue for 3-5 days after the desired effect has been achieved.

Spray Form

Initially, depress pump until primed. Hold close to pet's mouth and spray directly, or spray onto its food or water. Use 3 times daily.

Cats and dogs under 20 lbs: 2 sprays
Dogs 20-50 lbs: 3 sprays
Dogs over 50 lbs: 4 sprays

Dosages may be repeated more frequently when needed for acute support. For more frequent dosing, use up to 5 times daily for the first 10-15 days.

Both forms of Respo-K may be used in conjunction with KC-Defense™ when dogs are to be placed in kennels to support the immune system and encourage respiratory health. For added long-term respiratory system support, it is recommended that Respo-K be administered in conjunction with AmazaPet™.

Note: Safe for animals of all ages, pregnant animals or animals that are nursing. Respo-K can safely be used along with prescription medications. No adverse interactions have been noted between the ingredients in Respo-K and prescription medications. However, as with any medicine, it is always advisable to consult your vet.

Caution: Please consult your vet if symptoms persist.

Get optimum results with regular use

While conventional medicine works by often treating just the symptoms, natural medicine strives to create holistic balance in the body to support systemic health, relieve ailments, and help prevent future disease. Unlike pharmaceutical drugs, the natural ingredients in our remedies support overall health and functioning (rather than just suppressing symptoms).

Pets respond to natural medicine in different ways. Some of our satisfied customers have reported observing immediate results in their pets while many others have reported observing optimal benefits taking effect within 3-6 weeks. To ensure your pet receives optimum results, it is important to administer natural remedies as directed and remain consistent. You may also find that giving your pet a smaller maintenance dose is beneficial for ongoing support. Many customers report using a regular maintenance dose as part of a preventative program for the continued health and well-being of their beloved animals.

How long until I see results?

Because Respo-K is 100% homeopathic, it supports the animal body on a cellular level – getting to work upon the first dose. Within a few doses, the respiratory system is supported. Continued improvement will be seen with regular use. While some animals need only a single dose, others may require additional doses, depending on factors such as the age and size of the animal. Response times vary from animal to animal, based on physiological composition and other circumstances. While some animals begin to show an almost immediate improvement that increases over time, others will see results after 3-5 days. For long-term support of the immune system, Immunity and Liver Support is recommended.

How long does one bottle last?

One bottle of Respo-K  tablets will last 12-36 days, depending on the size and dosage needs of your pet.

One bottle of Respo-K spray will last 30-40 days, depending on the size and dosage needs of your pet.

Rated 4.8 out of 5 by 23 reviewers.
Rated 5 out of 5 by Excellent Product I used it on my cat and the results were very good. I love that it does not have side effects like the normal medication. I highly recommend it. July 19, 2012
Rated 5 out of 5 by Respo-K This product works FAST....For mild congestion, I use it once a day for 4 days and it clears the congestion up. July 19, 2012
Rated 5 out of 5 by Respo-K has provided great relief My feline friend Sam was a 6 week old kitten we rescued that had almost starved to death. From the beginning he had chronic sinus problems and HEAVY discharge all the time. Vets and a Vet Specialist (for cats) were unable to remedy his problem. After he turned 4 years of age I discovered Native Remedies and decided to try Respo-K. It has given my little buddy a great amount of relief by reducing the congestion and allowing him to breath easier. I am well satisfied with the results of Respo-K and have and will continue to recommend it to others. April 27, 2012
Rated 5 out of 5 by Small size makes it easy to give I became a foster to a 9 yr old miniature poodle that came from death row @ a city shelter. She came to me with kennel cough. According to a vet, the worst strain of Kennel Cough ever seen, with a very long recovery time. The antibiotics didn't seem to be working fast enough for my liking. I searched the internet for a natual product. I came across Respo-K. I decided to use it as a supplement for my very sick poodle and a preventative for my other 2 dogs . Carson, the poodle, started to improve after the 1st dose. And so far so good with my other 2. I love this product! I really believe it gave her the boost she needed. I am spreading the word among other fosters, this stuff works!!!! February 25, 2012
Rated 5 out of 5 by This Product Really Works- Fast Results Thank you! My newly adopted cat had a very bad sneeze and runny nose from being in a shelter. He was up-to-date on all his shots so I didn't want to take him back to the vet and upset him more. I purchased these pills hoping they would help his symptoms. He go 2 pills in the morning and 2 pills at night, by the second morning he was back to normal being the wonderful playful cat that we love so much. Thank you! August 26, 2011
Rated 5 out of 5 by You'll be happy with this product! Our kitty Latta was not able to fight off chronic congestion and sneezing since birth. She has been on prescription medications off and on for almost four years. We didn't want her to continue having to take prescription medications the rest of her life and searched for a more natural remedy on the Internet. Found Native Remedies and tried Respo-K with great results! She is now on a preventative maintenance of one pill a day and seems healthier than ever. Just smash up the pill, mix it with her food, she gobbles it up, and it's that easy! We feel this will help her in the long run and are so grateful! Thank you! July 21, 2011
Rated 5 out of 5 by This product works like a miracle! Our kitty Latta was born with a compromised immune system and severe respiratory problems. She has been on antibiotics off and on for over three years. We didn't want her to continue having to take the antibiotics the rest of her life and searched for a more natural remedy on the Internet. Found Native Remedies and tried Respo-K with great results! She is now on a preventative maintenance of one pill a day and seems healthier than ever. Just smash up the pill, mix it with her food, she gobbles it up, and it's that easy! We feel this will truly prolong her life and are so grateful! Thank you! July 18, 2011
Rated 5 out of 5 by It works! We have given this to many pets (cats and dogs) with respiratory problems, and it has worked for everyone. One of our cats has a chronic sinus problem and always sounds like he's snoring. Whenever we hear him sounding congested, we pop one of these in his mouth and he's clear in no time. July 18, 2011
Rated 5 out of 5 by A CURE with no help from a vet My vet wanted me to spend hundreds of dollars a year for steroids for my ten year old cat to treat his asthma. I was stubborn enough not to agree, thinking there must be something else out there that would be DRUG FREE and cheaper. Behold Respo-k, alternated with sinu-rite and my cat is CURED of asthma. No wheezing or sinus trouble at all . He does not even need the remedy every day . Thank you native remedies!!! May 25, 2011
Rated 5 out of 5 by An incredibly effective product for animals suffering from frequent coughing/wheezing episodes. Our two year old yorkipoo Bailey suffered from monthly coughing/wheezing and palette spasms since we moved to South Texas. When this happened, she would put her front paws out and strain to cough, completely exhausting herself and scaring us. The vet gave us varying diagnoses, sometimes calling it kennel cough, and other times simply telling us that something irritated her palette. Each time they prescribed a cough suppressant combined with a heavy narcotic. The cough suppressant/narcotic did make the coughing subside, but Bailey was a zombie and slept all day. I grew tired of taking her to the vet each month and giving her the narcotic. I read about Respo-K on various forums and thought we may as well give it a try. We started out giving her three pills per day for two weeks, then two pills per day for another two weeks, and now she gets just one pill in the morning. I am so happy to say that since we started Respo-K five months ago, Bailey has NOT HAD A SINGLE EPISODE of coughing/wheezing! I would recommend this product for any animal that is having similar symptoms. The change in Bailey’s respiratory health is remarkable, and I am so very very thankful! March 24, 2011
Rated 5 out of 5 by Really eases dog's congestion My 11-12 year old dog (a rescue, so we're not sure how old) has developed some respiratory issues in recent years (possibly allergy-related), including reverse sneezing, congestion, and sniffling. I prefer natural remedies when possible, so decided to try Respo-K -- and within a week, it had really eased the dog's congestion and alleviated the reverse sneezing! I don't know what it tastes like but he gobbles the little tablets right out of my hand with no problem. I'm so happy to have found it -- just ordered some more! March 20, 2011
Rated 4 out of 5 by Respo-K This product did what it said it would do but my cats had more respiratory issues than just a cough. So I change to the Sinu-rite, Ammaze, They have both worked very well. August 16, 2013
Rated 4 out of 5 by Helpful for relief of congestion My cat has the rhino virus since we found him at 1 1/2 years of age. The Respon-K has helped his congestion, along with the lysine that he must take each day, up to 500 mg. to combat this virus, which will never go away. June 23, 2013
Rated 4 out of 5 by Great Holistic Alternative I have a two year old cat that has had congestion issues since we adopted her from a shelter at kittenhood. Our vet has noted that she has a form of upper respiratory that is not necessarily cure-able. As such, instead of keeping on pumping her full of antibiotics that only temporarily clear things up, my husband and I keep our cat on a daily regimen of L-Lysine mixed with soft food and three Respo-K tablets (morning, afternoon, before bed) hidden in bit of Greenies Pill Pockets. While this product has not taken her congestion away completely, it helps her to maintain a lower level of congestion (no more whistling nose), and allows her to breath better. Overall, I would definitely recommend this product. February 22, 2013
Rated 4 out of 5 by Works well for Layla My cat Layla has had a cough since she was a ktten. Her breathing gets labored and raspy.Giving her Respo-K helps to ease her symptoms. December 2, 2012

How has Respo-K helped others?

Respo-K has been used to relieve colds and respiratory infections. Here is what some pet owners have to say:

“I used your Respo-K remedy for my kitten when she got a cold. I was really worried about her as she is still so young and fragile. By the end of the weekend, she was looking much better and was eating again. By Wednesday she was her old self again. I have a friend whose kitten died from something as simple and “minor” as a cold so I am really relieved and grateful. Thank you!”


“I wanted to write and tell you about my experience with your natural remedies. I am a big cat-lover and have a house full of pets. Your PetAlive has become one of my favorite websites and I’ve ordered a number of different remedies for my extended “family”. Although I have been happy with everything I’ve ordered from you I must specifically comment on your Respo-K and Sinu-Rite products. I have one cat who often gets respiratory tract infections and it’s almost a given that her sinuses become involved. We have battled with this problem and I can’t tell you what I’ve spent in vet bills and antibiotics. Last time she got an infection I gave her Respo-K and Sinu-Rite and she recovered much more quickly than usual. I continued to give her the remedies for a little while after she was well again and she hasn’t had a repeat infection since. She actually seems much stronger and healthier overall as I’m sure the numerous illnesses were putting a serious strain on her health and energy. I am going to make sure I always have stock of these remedies in my house from now on!”

—Moira H.

“I adopted a cat that I did not know had a respiratory problem which became very severe… I was going to lose my dear sweet Molly, and I was desperate for a natural help. The Respo-K arrived in just a couple of days. I gave it 5 times a day for the first two days, and by the third day the worst of the problem was gone. Molly was completely cured and healthy within 4 days. I am so blessed to have found the PetAlive site online. I will be forever grateful. Thank you so very much.”

—Karen, WI, USA

“I just wanted to Thank you for this wonderful product. We have been battling our cats' sinus conditions for over 3 years. No vet could find a solution and several hundred $ later I felt lost. Even more concerning and upsetting was watching my cat constantly sneezing and often having bloody sinuses from the junk in his lungs. We often wondered if he would ever be the same again. Thanks to Sinu-Rite and Respo-K our cat is back to normal. I want to encourage your readers to buy the combination for their cat or dog. The improvement has been 200% and we are all much happier. Thanks for providing such great products!”

—April, CO, USA

“I have two rescue Persians with extremely short nasal passages. One, in particular, has always had severe eye and nasal discharge, wheezing, stuffed up nose, etc. She has been to the vet numerous times and treated …I started her on Sinu-Rite about a week ago and am amazed at her improvement. For a few days she was completely clear, could breathe, etc. Then she caught a cold and is sneezing, etc. I am going to add Respo-K and the Immunity and Liver Support to see if that improves her immune system and respiration. Thank you for your wonderful products!”

—Dawn, USA

“We have many cats and one is about 18 with…respiratory [issues] and congestion. She has been …[on medication] for many months. This seemed to help a little for a little while, but was steadily destroying her immune system. I didn't know what else to do until I found your website and Respo-K. It sounded possible for it to help, so I ordered some. Within 2 days I saw a significant improvement in her breathing and appetite. I have had her on it for 3 weeks, twice a day and she is eating well, her coat is fuller and she is putting on a little weight again. I was just about given up, but am so very thankful that the quality of her life has improved. Thank you!”

—Anne A., AR, USA

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SKU: PRSP501 FDA NDC: 68703-013-80


Homeopathic remedy to relieve the symptoms of colds and respiratory infections in pets

  • Relieves and prevents colds and respiratory infections in pets
  • Reduces symptoms of sneezing, coughing, watery eyes and nose
  • Decreases recovery time from respiratory infections
  • Prevents colds by strengthening the immune system
  • Stops the recurrence of secondary infections
  • Promotes optimal lung functioning for easy breathing
Price: $32.95
Price: $65.90
Save $32.95 (33%)

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