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  1. What should I feed my cat during the treatment?
    Freshly cooked fish, chicken and other natural foods.  If your cat has diarrhoea, consider switching to dry cat food for a few days until diarrhoea stops.


  2. How long is the treatment?
    The recommended length of treatment is 12 weeks. However, the actual treatment length may depend on many factors such as how quickly your cat responds to the treatment,  the stage of the FIP infection when you began the treatment, and your personal financial situation. 


  3. Can GS-441524 be used along with other medications?
    Yes, GS is an antiviral treatment, and can be used with other medications to improve the overall health of your cat.  However, Lysine is NOT recommended to use along with GS. 


  4. Can I use Interferon for FIP treatment?
    Interferon is an immunesuppresant drug. It can reduce the symptoms of feline infectious peritonitis by reducing the body’s response to the FIPV infection. However, it does not treat the virus, but only effect body’s response to the virus infection.  Thus interferon can not be used to successfully treat of Feline infectious peritonitis (FIP).


  5. What else?
    As your cat begins to heal, it will gain weight as appetite returns and regular eating begins.  Weigh your cat once a week and adjust the dosage accordingly.  Work closely with your veterinarian for address possible complications that may occur such as liver and kidney damages and infections.


  1. Volume per vial?
    Every vial contains ≥7ml


  2. Why do you offer 3 concentrations?
    Higher concentrations are formulated for larger cats, while lower concentrations are formulated for smaller cats.


  3. How much and how often?
    1 injection per day, based on your cat's body weight for 12 weeks.


  4. What's the appropriate dosage for my cat?
    To calculate the dosage please use our dosage calculator. We do not recommend reducing the dosage during the treatment as it may increase viral resistance to GS. 


  5. How do I perform injections on my own?
    Watch our instructional video for a step by step instruction on how to perform subcutaneous injections at home. ​​


  6. How to store vials?
    For short term storage (30 days or less), store vials at ambient temperature of less than 40° Celsius, away from sunlight.  For long term storage, store vials in your household refrigerator for up to 3 years.


1. When can I start oral capsule treatment for my cat?

For best treatment results, we recommend using oral capsules after 30 days of injections, or when your is eating and pooping normally and doesn’t display FIP neurological symptoms.


2. When not to use oral capsules?  

  • While your cat still exhibits ocular or neurological symptoms.

  • While your cat suffers from intermittent vomiting or diarrhoea.

  • If your cat is less than a year old and suffers from effusive (wet) form of FIP.


3. How to choose the right type of oral capsules for my cat?

Choose the oral capsules according to your cat’s current weight. 

  1. less than 2.5kg (pink capsules)

  2. 2.5 - 4 kg (green capsules)

  3. greater than 4kg (blue capsules)


4. How many oral capsules are needed for my cat?

Provide 1 oral capsule per day. Adhere to a scheduled time. Do not skip any day. Continue until 84 days or when all FIP symptoms have disappeared.


5. What should I do if my cat gained weight but the oral capsule that I purchased before is for cats that is below my cat's current weight?

You should switch to the higher concentration of the oral capsule for your cat's new weight. For example, if your cat’s weight has increased from 2.4kg to 2.8kg, it is recommended to switch from pink capsules to green capsules. This ensures that your cat is provided with sufficient active pharmaceutical ingredients for its treatment..


6. One pack of oral capsules is enough for how many days of treatment?

One pack contains 14 capsules, sufficient for 14 days of treatment.  Administer one capsule per day, 24 hours apart.


7. What should I do if my cat does not show improvement after using oral capsules?   Can I give him two pills per day?

Lack of improvement or deteriorating conditions are caused by either insufficient dosage or poor absorption by your cat’s digestive system.  You should provide at least 5 days of oral capsules before determining whether there is a lack of improvement.  After 5 days if there is no visible improvement of symptoms, you may increase dosage from 1 oral capsule to 2 oral capsules per day, or switch to a higher concentration of oral capsule. The best option is to  switch to injections. Injections are the most reliable method of delivering an appropriate dose of active pharmaceutical ingredients to your cat’s body.  


8.  How do I know the amount of GS that my cat will absorb?

Each cat has a different absorption rate for the oral capsule, based on genetics and health factors. The exact absorption can only be determined via a complex and expensive diagnostic procedure called HPLC analysis.  


9. Is Oral capsules a better choice compared to Injection?

Each treatment option has its pros and cons. Both treatment options are effective against feline infectious peritonitis (FIP) infections.  Injections are precise and more controllable.  The effects are immediate.  We recommend starting all feline infectious peritonitis (FIP) treatments with injections.  Oral capsules are easier to administer, cause no pain, and can be done easily at home.  However, GS-441524 will take longer to travel to the bloodstream because it first has to go through the digestive system.  It is also impossible to know how much of the GS-441524 is absorbed by the body to combat FIPV.   We recommend starting oral capsules treatment only after your cat’s condition is stable. Feline infectious peritonitis virus often damages digestive organs such as the stomach, intestines, kidneys and liver as it spreads throughout the body. Damaged organs reduce digestive functions and will cause poor absorption of GS-441524 into the bloodstream.  When oral capsules are given too early in the treatment, it may cause prolonged treatment or higher chances of relapse in the future. 

10. Can I switch back injection treatment after I started oral capsule treatment?

You may switch back to injection after starting oral capsule treatment. However the injection dosage will start from 10mg/kg after you switch from oral to injection. This is because our oral capsule has higher concentration than injection treatment. Please consult us the injection amount for your cat if you wish to switch from oral to injection treatment.


11. My cat has relapsed, can I use oral capsules to treat him/her?

We do not recommend using oral capsules for relapsed cases. You should use injections and provide between 12mg-15mg for relapse treatments. Please consult us on how to properly treat relapsed FIP cases.


12. Can I use other capsules than the one recommended for my cat’s weight class?

Yes, but you should only use higher weight class capsules than the one recommended for your cat’s weight class, never below your cat’s weight class. Keep in mind that higher dosage capsules are more costly.  Unless there is a demonstrated need, buying higher weight classes capsules is a waste of money.


13. How long does it take for my cat to show improvement?

Normally cats will show improvement within 10-15 days of oral  treatment. Some cats will show improvement within as little as 5 days.  


14. Why is oral treatment more expensive than injection?

Oral capsules require higher concentration of the active pharmaceutical ingredient GS-441524 to treat FIPV when compared to injections. Production of oral capsules is also more complex and time consuming compared to injection. These factors caused the price of oral capsules to be higher than injection.


15. Are there any side effects when using Basmi FIP™ oral capsule treatment?

There are no known side effects when using our oral capsule.  You may use it in conjunction with other treatments and supplements recommended by your veterinarian.


16. What if I cannot feed my cat oral capsule daily at the same time everyday?

For best results the oral treatment should be administered within a 3 hour window from the time of the previous day; 1.5 hours before or 1.5 hours after the previous day.


17. Can I return unused capsules for a refund?

We do not accept opened and/or partially consumed oral capsule packages. We recommend donate unused oral capsules to your veterinarian or other FIP cat owners so they may use the capsules to help save cats.


  1. Short Term (30 days or less) store in ambient temperature of less than 40°  celsius,  away from direct sunlight.

  2. Long Term (30 days or more) store in household refrigerator between 3°~ 9° Celsius for up to 3 years for injections. Up to 1 year for oral capsules in a dry area at room temperature. Do not store the medicine in the freezer.



  1. How long does it take for the shipment to arrive?
    1~2 working days to most major cities.
    2~7 working days to rural areas and non major cities.


  2. Can you ship to all countries?
    No, we can not ship to all countries due to legal, logistical, and custom clearance barriers. Contact us if you can not complete a purchase on our website.


  3. How quickly do you ship out my order?
    95% of orders are shipped within 24 hours. 5% are shipping within 3 days due to national and religious holidays, including Christian, Hindu, Islamic holidays. 


  4. How can I track my shipment?
    You will receive an email with a FedEx, Xpressbees or Delhivery tracking number once we have booked your shipment for pick up.  You may track your order by going to, or


  5. Will you take care of custom clearance?
    Yes and no.  The shipper is the custom clearance agent.  We provide shipper with importation declaration documents to complete custom clearance.  However, your local custom office may contact you to request additional documents.  If this is the case, contact us at, and we will provide you all necessary documents to pass to your local customs authority.


  6. Will I need to provide any documents for customs clearance?
    DHL and FedEx may contact you for additional documents such as invoice and payment receipt to complete custom clearance.  Please contact us before submitting any documents to FedEx or DHL. We may be able to help you save a some money import tax.



  1. What payment options do you accept?
    We accept bank cards with Visa and MasterCard logo, PayPal, and local bank transfers.


  2. What if I don't have any of the above payment options?
    You may send us a bank transfer.  However, keep in mind that it may take up to 4 days for us to receive the fund and send our FIP treatment to you.  We recommend using as a cheap and reliable bank transfer platform.   


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