Does Vitamin C Help Cats with a Cold?

Cats are among animals that can make their own vitamin C or ascorbic acid in their liver. Although it has many essential functions in their bodies, under normal conditions, these pets do not need it added in their foods or supplemented.

However, there are cases when vitamin C for cats can be recommended including when they are very stressed or ill, have liver disease or to reduce oxidative damage involved in diseases such as heart disease, dementia, asthma or cancer.

What about colds, are vitamin C crystals, solution, powder or tablets a home remedy for cats with colds or not? If they are, what dosages are recommended?

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Signs of cold

If your feline friend has a cold, you will notice him or her sneezing, having a fever, coughing,  runny noses and eye discharges that may be watery or thick, clear, green or yellow.

Also, your cat may be lethargic, suffer from anorexia, be dehydrated, among other symptoms.

Does it help?

Before we go straight to the answer, it is worthwhile to acknowledge that the use of this vitamin for cats with cold elicits unending debate with some saying it does help and others stating that its use lacks scientific backing.

Does vitamin C treat cats with cold

Does vitamin C treat cats with cold

Those recommending its use recommends its use in boosting recovery from various medical conditions including colds, only after you consult your vet. However, your pet should not have a history of oxalate stones or urine crystal formation.

Another source states that as an immunity booster, it can help in treating viral and bacterial colds as well as improve healing time.

Similar sentiments are echoed by Pets on Mom Me, and Me You Paris. Furthermore, Chargrill Falls Veterinary Center and Pet Clinic recommend “ 500mg, when healthy as a preventative measure, when sick the dose should be 1000mg twice daily.”

The list of those recommending its use is endless since Vetinfo among others also recommends the use of ascorbic acid tablets. Furthermore, Erica Raines, DMV Courtenay British Colombia, states that the recommended dosage is 1000mg or even more to treat this ailment.

Those not recommending

On the other hand, according to, Dr. Rachel Barrack, who is a licensed veterinarian and certified veterinary acupuncturist state that it is unclear if this vitamin will help in fighting colds or not.

Instead, she recommends the use of lysine and notes that the use of apple acid vinegar and vitamin C is not one of the common prescriptions by vets.

Finally, Cat Lovers Only notes that there has “been more than one study that has failed to show that vitamin C supplementation has any effect on healing viruses or bacterial infections in cats.”


By the virtue that ascorbic acid helps boost immunity, it may be helpful in fighting or protecting your feline friend against some diseases.

However, since these pets can make their own, and they do not require any supplementation, you need to talk to your vet before you try this remedy.

More scientific based research needs to be done to be certain whether ascorbic acid does help in treating colds in cats or not.

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If your cat is very sick, you should always see your vet for diagnosis and treatment. Avoid using the information you get from the internet especially on those on natural remedies and holistic treatment since this animal may be having other underlying conditions.

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