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Instructions for Dosing

How to weigh appropriate dosage


Twist open the capsules and place the powder in the included jar.


First use only:  Hold Unit, place 50g weight on scale, wait for "PASS."


Turn off the scale and place the weighing pan onto the scale.


Place pan on scale, then turn on. Always double-check grams unit is selected first. Weigh powder and mix into a teaspoon (5ml) of water, chicken broth, or goat's milk.  Mix this medicated liquid into wet food thoroughly.

Feeding Schedule

Feed your cat twice daily, approximately 12 hours apart, with medicine each time. Light snacks are ok, but avoid bigger meals between main feedings. Don't exceed 14 hours between meals.

The right Dosage

⚠️ All cats must start off at 20mg/kg for 14 days to clear the brain of the FIP Virus.  After, you may continue at the appropriate dosages listed below.

Wet or Dry FIP

Administer 10mg (0.010g) per kilogram of body weight 12 hours for 84 days.

Ocular FIP

Administer 15mg (0.015g) per kilogram of body weight every 12 hours for 84 days.

Neurological FIP

Administer 20mg (0.020g) per kilogram of body weight every 12 hours for 84 days.

Frequently Asked Questions

  • You can administer a dose up to one hour early or one hour later than originally scheduled.  However, avoid exceeding a 14-hour gap between doses. Missed a dose by over six hours? Skip it and continue with the regular schedule, but extend the treatment by a day for each missed dose.

    To reduce vomiting, try mixing the supplement with dry kibbles in addition to wet food. If your cat vomits within an hour of taking the dose, administer another full dose.

  • If your cat is hesitant to eat their medicated meal, consider these strategies:

    1. Use a more aromatic wet food to better disguise the smell.  

    2. Encapsulate a dose according to your cat's weight in chicken-flavored gelatin capsules, using a pill shooter or pill pocket for easier administration.  Simply place the pill on the back-center of your cat's tongue. 

    3. Mix the powdered dose with low-sodium chicken broth, tuna water, goat's milk, Gerber's chicken baby food in a syringe for direct feeding.  

    4. If your cat's appetite is low, we'd recommend an appetite stimulant such as Mirataz.  In some situations, prednisone/prednisolone may be used according to your vet's direction, but we recommend the use of meloxicam whenever possible.  

    Rest assured, we have been able to get all cats to comply with their treatment using one of the above methods.  For further information or questions, please email us at

  • For spaying or neutering, it's best to wait until 3 to 4 weeks before the treatment concludes. Doing it earlier may stress your cat and risk a relapse. As for vaccinations, ideally, wait until three months after completing the FIP treatment. However, consider your cat's lifestyle: outdoor cats face higher risks without vaccinations compared to indoor cats. Assess the benefits and risks for your cat's specific situation.

  • Steroids should only be used in critical cases, as they may hide FIP symptoms and hinder treatment adjustments. If necessary, low doses of prednisone/prednisolone (2mg/kg daily for two weeks, then tapered to 0.5-1mg) are advisable. Meloxicam is an alternative option as a non-steroidal anti-inflammatory.  

  • While using Remedy2801 for FIP, it's important to support your cat's liver, which processes the medication. We recommend Denamarin, a potent liver supplement combining SAMe (S-Adenosyl-Methionine) and milk thistle extract. If Denamarin isn't available, separate SAMe and milk thistle supplements are a viable alternative, though less optimal. The liver is a highly resilient organ and can recover quickly if supported properly. Therefore, we strongly advise using a liver support supplement alongside Remedy2801, as long as it doesn't affect treatment compliance.

    Additionally, probiotics are highly beneficial, and we also suggest considering omega-3 fatty acids for overall health.

  • For optimal monitoring, your cat should have blood tests every four weeks. However, if this is not feasible, tests at Week 6 and Day 80 are adequate. In cases of financial hardship, the Day 80 test is crucial for assessing if your cat can stop treatment. For further guidance, feel free to reach out to us at for a second opinion on blood tests.

  • Remedy2801™, similar to oral GS-441524, may cause certain side effects. Initially, some cats might experience diarrhea as their bodies adjust and eliminate toxins and viruses. This usually resolves within a few days without concern. Less commonly, vomiting and nausea can occur. Rarely, hair loss may be observed. Adhering to recommended dosages minimizes the risk of rarer side effects like broken whiskers, folded ears, and reduced white blood cell count.

  • A deterioration in your cat's health during treatment may indicate an initial misdiagnosis, particularly in cases of neurological FIP where symptoms can be subtle in the early stages. This can lead to inadequate dosing. If regression is observed, it's advisable to incrementally increase the dosage by 5mg/kg weekly. Observe for improvements and continue this adjustment until the dosage reaches a ceiling of 20mg/kg.

Life After FIP

After just 84 days of treatment, your cat should be successfully cured of FIP.  To confirm a successful cure, you will need bloodwork results done at around Day 80 to determine whether your cat needs to continue treatment.  If your vet needs a second opinion on bloodwork results, we can help.  Send us an email at to get your bloodwork results deciphered.  

The following three months after treatment is extremely important.  You will need to keep a careful eye on your cat to observe signs of a relapse or reinfection.  This is called the three-month observation period.  If you treated with Remedy2801 for more than 60 days, the chances of a relapse are nearly zero; however, reinfection is still possible at any point.  It is advised not to introduce any more cats to your home unless you are aware of the risks.

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