Feline Herpesvirus Treatment in Australia: What to Expect

Key takeaway: Feline herpesvirus treatment focuses on reducing and managing flare-ups, not on removing the virus, because feline herpesvirus (FHV-1) is a lifelong infection that stays in the body for life. The main tools are antiviral medication such as famciclovir, supportive care for the eyes and nose, treatment of any secondary bacterial infection, and steady stress reduction. Your veterinarian sets the right plan based on your cat's specific signs.

A cat resting comfortably at home.

What is feline herpesvirus (FHV-1) in cats?

Feline herpesvirus (FHV-1), also called feline viral rhinotracheitis or "cat flu", is one of the leading causes of upper respiratory infection in cats and a common cause of recurring eye and respiratory flare-ups. Once a cat is infected, the virus remains in the body for life and can reactivate later, most often after stress.

This is why a feline herpes infection is described as lifelong. Many cats catch FHV-1 young, especially in shelters, catteries, or multi-cat homes, and then carry it quietly between flare-ups.

Stress is the usual trigger for a new episode. Moving house, a new pet, boarding, illness, or surgery can all bring signs back in a cat that has looked healthy for months.

Can feline herpesvirus be cured in cats?

No, feline herpesvirus cannot be cleared from a cat's body, because FHV-1 is a lifelong virus. Treatment aims to shorten flare-ups, ease symptoms, and lengthen the calm periods in between, not to eliminate the infection.

This is an important expectation to set early. Any product or claim that promises to remove or permanently end feline herpes in cats is not consistent with how this virus behaves.

The realistic and achievable goal is good long-term control. Many cats live full, comfortable lives with occasional flare-ups that are managed well when they appear.

What are the signs of a feline herpes infection?

The most common signs of a feline herpes infection are sneezing, nasal discharge, and eye problems such as squinting, conjunctivitis, and watery or sticky discharge. In more serious flare-ups, cats can develop corneal ulcers and sometimes mouth ulcers.

Because the eyes are so often involved, FHV-1 is a frequent cause of ongoing or recurring conjunctivitis. Squinting, redness, and a cat that keeps one eye partly closed all deserve prompt veterinary attention.

Reduced appetite is common during a flare-up, largely because a blocked, congested nose dulls a cat's sense of smell. Gentle feeding strategies matter here, and some of the same warming and aroma tricks used for other unwell cats, such as those in this guide on encouraging a reluctant cat to eat, can help a congested cat keep eating.

Signs can look similar to other conditions, so an accurate diagnosis matters. Cat flu, dental disease, and other infections can overlap, and confirming the real cause avoids the kind of mix-ups discussed in our overview of common feline misdiagnoses.

What are the treatment options for feline herpesvirus?

Feline herpesvirus treatment usually combines an antiviral medication, supportive care for the eyes and nose, treatment of any secondary bacterial infection, and long-term stress reduction. No single step does everything, so most cats do best with a combined plan built by their veterinarian.

Here is how the main options compare at a high level.

Treatment approach	Best for	Notes
Antiviral medication (for example famciclovir)	Reducing the severity and length of active flare-ups	Targets the virus itself; prescribed and dosed by your veterinarian
Eye care and topical treatment	Conjunctivitis, squinting, corneal involvement	Eye medication choice must be guided by a vet, since some products can worsen ulcers
Antibiotics	Secondary bacterial infection only	Do not treat the virus itself; used only when bacteria complicate a flare-up
Supportive care at home	Every cat during a flare-up	Hydration, nutrition, humidified air, gentle cleaning of eyes and nose
Stress reduction	Preventing and spacing out flare-ups	A calm, stable routine lowers the chance of reactivation

Each column plays a different role. The antiviral works against the virus, antibiotics only address bacteria that move in during a flare-up, and supportive care keeps your cat comfortable and eating while the episode passes.

Antiviral medication

Famciclovir is an oral antiviral that a veterinarian may prescribe to reduce the severity and duration of FHV-1 flare-ups. It works against the virus rather than against bacteria, which is why it plays a central role in managing active episodes.

Eye care

Because FHV-1 so often affects the eyes, targeted eye care is a common part of treatment. Some eye medications are unsuitable when a corneal ulcer is present, so eye treatment should always be chosen by your veterinarian rather than picked up over the counter.

Antibiotics for secondary infection

Antibiotics do not treat feline herpesvirus itself. They are used only when a secondary bacterial infection develops on top of the viral flare-up, and the decision to use them belongs to your veterinarian.

Supportive care at home

Supportive care keeps your cat comfortable while a flare-up resolves. This includes gentle cleaning of discharge from the eyes and nose, warm and aromatic food to keep appetite up, good hydration, and humidified air to ease congestion.

What is HerpX and how does famciclovir help?

HerpX is CureFIP's feline herpesvirus product line, and its active ingredient is famciclovir, an antiviral. It does not contain GS-441524 or EIDD-1931, which are used in our FIP and FCV product lines, so it should never be confused with those treatments.

Famciclovir is used to reduce the intensity and length of FHV-1 flare-ups. The right dose and schedule depend on your individual cat, so all dosing decisions for HerpX or any famciclovir product should be made by your veterinarian rather than from an online figure.

This article is for education and awareness. Its aim is to help you understand feline herpesvirus treatment pathways and to prepare good questions for your veterinary appointment, not to replace veterinary advice.

How can you reduce feline herpes flare-ups at home?

The most effective way to reduce feline herpes flare-ups is to keep stress low and your cat's daily life stable, because stress is the main trigger for reactivation. Alongside this, good nutrition, hydration, and prompt attention to early signs all help.

A practical routine looks like this.

1. Keep a stable daily rhythm for feeding, play, and rest, and avoid unnecessary changes.

2. Reduce known stressors such as overcrowding, sudden introductions, and disruptive travel where you can.

3. Watch for early signs like a single sneeze, a watery eye, or slight squinting, and act early rather than waiting.

4. Support appetite during a flare-up with warm, strong-smelling food so a congested cat keeps eating.

5. Gently clean discharge from the eyes and nose with a soft, damp cloth to keep your cat comfortable.

6. Book a veterinary visit promptly if the eye is painful, an ulcer is suspected, or your cat stops eating.

Consistency matters more than any single trick. Cats that live in calm, predictable homes tend to have fewer and milder episodes over time.

Some caregivers ask about L-lysine supplements. Evidence for lysine is mixed, so treat it as an optional extra to discuss with your veterinarian rather than a core part of the plan.

How is feline herpesvirus different from FCV and FIP?

Feline herpesvirus (FHV-1), feline calicivirus (FCV), and Feline Infectious Peritonitis (FIP) are three separate diseases with different causes and different treatments, and they should never be treated as the same thing. Mixing them up leads to the wrong plan, so it is worth knowing which is which.

FHV-1 is a lifelong respiratory and eye virus managed with famciclovir under the HerpX line. FCV is a different virus that can cause mouth disease such as stomatitis and gingivitis, and it is addressed with the EIDD-1931 CaliciX line.

FIP is caused by a mutated feline coronavirus and is treated with GS-441524, the antiviral at the core of modern FIP care. GS-441524 monotherapy injectables have a 92% reported success rate from UC Davis (Pedersen, 2019), and the dual antiviral combination of GS-441524 and EIDD-1931 has 78.3% remission reported by Li and Cheah (2025).

Those FIP figures apply only to FIP and never to feline herpesvirus. There is no published success rate for FHV-1 treatment, so any percentage attached to feline herpes care would be misleading.

CureFIP's experience sits in the FIP space, where our network has supported more than 100,000 cats since 2019. If you are actually researching FIP rather than herpesvirus, our guide to how FIP progresses from infection to symptoms is a better starting point.

FAQ

Can feline herpesvirus be cured?

No. Feline herpesvirus (FHV-1) is a lifelong infection that stays in the body for life, so treatment aims to reduce and manage flare-ups rather than clear the virus. With good care, many cats have long, comfortable periods between episodes.

What is the main treatment for feline herpesvirus in cats?

The main treatment combines an antiviral such as famciclovir with supportive care, eye care where needed, and stress reduction. Antibiotics are added only when a secondary bacterial infection is present, since they do not act on the virus itself.

Is HerpX available to buy in Australia?

This article covers HerpX and famciclovir for education and awareness only, and does not offer it for purchase in this market. Famciclovir is an antiviral that a veterinarian may prescribe, so speak with your own vet about whether it suits your cat.

Do antibiotics treat feline herpes in cats?

No. Antibiotics do not treat feline herpesvirus, because it is a viral infection. They are used only to control a secondary bacterial infection that can develop during a flare-up, and always under veterinary guidance.

Is feline herpesvirus the same as FIP?

No. Feline herpesvirus is a lifelong respiratory and eye virus, while Feline Infectious Peritonitis (FIP) is a separate disease caused by a mutated feline coronavirus and treated with GS-441524. They have different causes, different products, and different outcomes.

If your cat is showing signs of a feline herpes infection, the best next step is a conversation with your veterinarian about the treatment options that fit your cat. You are also welcome to learn more with the CureFIP Oceania team about feline health and how we support caregivers across Australia and New Zealand. Every medical and dosing decision should be made with your own vet.