GS-441524 injection support for urgent FIP days.
Facing suspected or diagnosed FIP can feel overwhelming. Start with when injections may be considered, what comes with your order, and the support available along the way.
When injections may be used
Injections are often discussed when a cat is critical, cannot swallow, vomits oral medicine, or needs stabilization before switching formats.
If injections are part of your veterinarian’s treatment plan, here’s what comes with MaxPaw.
WHY FIP PARENTS TRUST OUR TREATMENT
Veterinary-grade quality, complete treatment kits, and compassionate support—everything you need for a successful recovery.
≥99.8% PURITY GUARANTEED
Our GS-441524 undergoes rigorous quality testing to ensure maximum efficacy. Every batch is verified for purity and potency before reaching you.
COMPLETE TREATMENT KIT
No searching for supplies—each order includes premium vials, sterile syringes, appropriate needles, and a guide. Ready to use out of the box.
Choose your injection kit
Review your veterinarian’s dosing plan, choose your vial quantity, and add the kit to your cart.
Day 42 Treatment
Yoshi
"Today is day number 42 of Yoshi's treatment. We are half way thru, hopefully. He is doing very well. I want to thank my son Steven Gindler and Rikki Peters for doing injections every day. And Lauren Crystal for answering all our questions."
25th Injection
Jocko
"Jocko has now had his 25th injection. After the first week, almost all the symptoms had disappeared. Since the beginning of the treatment, he has regained half of the weight he lost. The injections went well."
Officially CURED
Jeff
"168 days DONE! As of yesterday, Jeff is considered officially CURED. We had a party last night to celebrate him. Jeff's mom and I want to thank everyone at MaxPawHealth for answering our questions."
Obsv. Finished
Randy
"TODAY MARKS THE DAY. Randy has made it through the treatment AND observation! We’re finished! There are no signs of relapse and he’s a healthy ornery boy, thank you everyone!"
Full Support
Minnie
"I’m thankful we were able to help Minnie, that these meds, and the super helpful people on here and admin saved her and allowed her an opportunity to feel well and enjoy all her friends."
Active & Happy
Jari
"My Jari-love is getting active again yeah so happy!! That’s a good sign. I am so grateful to have this medication!! He is doing very fine!! Greetings from snowy Luxembourg."
The customer service I was provided was phenomenal. Chris from California. Unfortunately my cat passed away before the meds came. I appreciate your company very much. God bless you Chris
I’m so grateful I found MaxPaw and their FIP treatment. Watching my cat go through FIP has been one of the scariest and most stressful experiences of my life. I just wanted to find something that could help save my baby, and seeing her start to get better has meant the world to me. Giving daily shots can be stressful, but knowing I’m doing everything I can to help her makes it worth it. FIP is such a scary diagnosis, and having hope for my girl again is something I can’t put into words. I’m so thankful for the progress she’s made, and I pray she continues getting stronger every day. ❤️ If you’re going through FIP with your fur baby, I know how scary it is. Never underestimate how much hope a little progress can bring! 🐱💕
Our cat was in critical condition. Since FIP medicine is so expensive, I searched Google and found Maxpaw. This injection really works! After only the first injection, our cat started eating, and I could see a positive change in his behavior.
I had heard this injection is very painful. Because our cat was in critical condition, he might have just been very patient, as he did not react to the pain for the first three days of injections. However, on the fourth and fifth days, he definitely started feeling the pain. But it is completely worth it! After only five days, he is already playful and eating well. On the sixth day, we are switching to oral medication to finish the full 84-day treatment.
If you are still hesitating whether to buy it or not, just do it! You have nothing to lose but your cat.
Quick delivery and helpful dialogue (messaging)
Too early to say if this is working but am pleased with the transaction
Saw an improvement in the 1st few days.
A good product with noticeable improvement unfortunately another underlying issue presented itself. This product would still be recommended to anyone who has a FIP symptomatic cat. The specialist at Maxpaw helped decide this for me and the right treatment. It brings so much hope when there was no hope for a very deadly virus.
Thank you for all your research and service for our much loved feline family members,
Former emergency vet tech
Thank you so much for taking the time to leave such thoughtful feedback. We are deeply saddened to hear about the underlying issue, but we’re grateful to know our team and treatment could bring you hope during a difficult time. Coming from a former emergency vet tech, your trust means the world to us. Wishing you comfort and peace, and thank you for everything you do for the feline community. ❤️
Wonderful staff at MaxPaw. They have been so supportive and kind. Cammie is doing so well and he’s his comical self as well!🐱🤗 thank you to everyone who has helped ~Mary, George and “Cameron”❤️
This medication single handedly saved my cats life
The treatment has been amazing for our Rascal. He's shown improvement with each passing day. The order process was easy and the shipping is fast. I couldn't be more grateful!
My kitty did a complete 360 with this medication so far, only in the second week of treatment , I’m so grateful!
after 3 days were seeing improvement and so far our shipments have arrived on time. Very pleased
Maxpaw has been a lifesaver! Very informative, always checking to see how our cat is doing and answering questions we have in a timely manner.
Great quality, my cat showed improvement in less than 24 hours!
It’s only been 5 days of injections but my 13week old kitten Remy went from lethargic with extremely labored breathing to playful, cuddly, and comfortable again! The meds were overnighted to me and we were able to start treatment a little over 24 hours after diagnosis. So thankful for max paw!!
I have unfortunately had five cats that I’ve treated for FIP over the last three years. I volunteer with a Cat Rescue and have my own cats as well as fosters that come in and out of the house. I have always trusted MaxPaw Health for my FIP treatment needs. Their customer service is unparalleled. The products that have been used in all five of my cases, the cats survived and are thriving now. I am so grateful for this company and the life saving medicine that they offer.
8 wk old kitten with anemia and ascites. Weighed 1062 grams and abdomen measured 35 cm. Gave initial subq dose 24 hours ago. Overnight the abdomen has gone down 4 cm. She has lost 50 plus ml of fluid
Increased activity, couldn't be happier. Absolutely amazed
Just started the treatment, chose the injections because it's easier and I can make sure the medicine has been administered and he does not seem to mind it. Company has been in touch several times making sure I don't have any questions or problems, good customer service support.
Product arrived quickly. The dose calculator made treatment smooth and simple
My cat is doing so much better after 6 days of treatment!!! I would highly recommend this company and this treatment. I honestly thought my cat 🐈 was going to die but she is more active and beginning to get her appetite back. I can’t thank you enough
These meds have been a lifesaver for my sweet boy, and he’s already starting to make a turnaround after 7 doses
Max paw saved my kitten‘s life. She’s on her 19th injection and I’m switching to pill form. She’s almost 100% back to normal. I will continue the 84 day treatment to the end. I can’t thank you enough.
Delivery was fast and medication has been helping!
My cat Smitty is really debilitated so I decided to jump start his treatment with the injectable form. There is a warning the injection stings/burns but it was drastic. Smitty cried out and fell over on his side with open mouth breathing. Honestly I thought I had killed him. Fortunately he was only in distress for a couple of minutes, but it felt like an eternity. For the next day, I gave him SQ fluids and gave the injection into the fluid pocket. No untoward reaction!! I know this technique may affect absorption but he did well for the remaining few doses (5 total).
fast service -great job
Delivery and support when you need them
Review delivery options and know where to turn with questions about your order or injection routine.
Not sure how many vials to order?
Use this injection reference and the calculator to estimate supply needs based on your veterinarian’s plan. Weight, symptoms, and diagnosis determine the actual dose.
| FIP type | Common pattern | Reference dose |
|---|---|---|
| Wet form, abdominal | Visible fluid or swelling in the belly | 5 mg/kg |
| Wet form, thoracic | Fluid in the chest or breathing difficulty | 6 mg/kg |
| Dry form | Persistent fever, weight loss, lethargy, jaundice, no visible fluid | 6 mg/kg |
| With ocular signs | Cloudiness, pupil changes, eye color changes | 8 mg/kg |
| With neurologic signs | Wobbling, seizures, disorientation, balance changes | 10 mg/kg |
Need a precise daily amount?
The daily injection volume depends on current weight, concentration, symptom type, and clinical context. Use the calculator before confirming the final plan.
EVERYTHING YOU NEED TO
KNOW ABOUT FIP INJECTIONS
Before your first injection, review the preparation guide below.
Weigh your cat using the most current weight before confirming the daily amount with your veterinarian. Gather the vial, syringe, fresh needle, and cleaning supplies in a calm, quiet space. Confirm needle gauge and length with your veterinarian or advisor. Let the vial reach room temperature, then draw the prescribed dose slowly and tap out any air bubbles.
Gently pinch the scruff of your cat's neck to create a skin tent. Insert the needle at a 45-degree angle. Inject slowly and steadily.
Offer a small treat and gentle praise after each injection. Follow the timing plan confirmed with your veterinarian. Discuss injection-site rotation and skin care with your support contact, and track appetite, energy, weight, fever, and follow-up lab guidance.
Each order includes GS-441524 vials, sterile syringes, and our comprehensive FIP treatment guide.
Our team is available 24/7 for any questions or concerns. You're never alone in this journey.
Questions families ask before buying.
Is this page enough to diagnose FIP?
No. Symptoms can suggest FIP, but diagnosis should be made with a veterinarian using exam findings, history, lab work, imaging, and other clinical evidence.
What comes with the injection order?
The kit includes GS-441524 vials, 3cc syringes with needles, and guidance materials so families are not searching for basic supplies separately.
Do injections have to happen at the same time every day?
Consistency is commonly emphasized in FIP treatment routines. Confirm your timing plan with your veterinarian or treatment support contact.
Should GS-441524 be refrigerated?
Refrigeration is not required. Keep the vial away from heat and light, and follow the storage instructions on your product label.
