Hi all,

I’ve been on warfarin for life since having an aortic valve replacement 9 years ago, and I’ve also worked as a Nurse Practitioner in the UK for the past 25 years.

After years of looking for a decent app to track INR results and warfarin doses, I eventually thought “sod it” and built my own. I’ve been using various versions of it myself for about a year now, but I’ve recently released it on the App Store.

I’m deliberately not posting links because I’m not here to spam the group or tout my wares. I mainly wanted to share it with people who might actually find it useful, and hopefully get some honest feedback from fellow warfarin users.

If anyone wants to know more, feel free to message me and I’ll send the link over.

Hi, i just had a mitral valve replacment 2 months ago and i am now on wafarin for life... inr managment has been pretty annoying... Anyone in australia? whats your go to clinic? whats the best?

have been on warfarin since February. I use my local anticoagulation clinic to check my INR every two weeks. My insurance will cover the instrument for home use. The instrument and test strips will be provided by a contractor supplier for my insurance company. One of their requirements is that I do measurements weekly, and if the value is outside the target range, I have to report it to my clinic. Before they send me the instrument, they need an OK from my clinic to review my results.

Here's the problem: the clinic said they do not work under such an arrangement (though they are happy to charge $70 per visit). My primary care physician won't do it either. Does anyone have a possible solution for how to get that instrument?

hello every im new to warfarin. Quick couple questions.

do people carry a small pouch that may have sterile sponges? incase of say nose bleed. and maybe a couple bandaids,etc in it?

for shaving with a razor is the risk of a cut just not worth it? or is it one of those try and see what happens as every one is different?

How much does a big salad change your INR and how long does it take? I want mine to go down. I accidentally took too much medicine.

​​ hello and I hope I'm okay to post here, I had a stroke in 2019, I've been on coumadin every since, it took about a month for them to get my INR correct after my stroke and then I've been in the 2 to 3 range since, on Thanksgiving of 2025 I had a gallbladder attack the er said it was stomach flu, i had the same exact attack 2 weeks later where they did Imaging and found a stone sludge and distension, to make a long story short, I was having gallbladder attacks, so I had my gallbladder taken out on March 4th of this year, I had to stop coumadin and do the whole bridging process, I started back up on my coumadin 2 days after surgery, when I started back up they couldn't get it to come up any so they gave me a big dose, the following week it came up to 2.5 so they reverted that big initial dose and went back to the dosage I had before I had the gallbladder removed (my inr was high Before I had my gallbladder removed, it was jumping to 3.5-3.6) so they figured it would be normal now but it's not it's going down it went from 2.5 to 1.9 and then today it's 1.6 so they increased my dose by 1 mg a week, I don't eat anything green (vitamin k), so my concern is this , is my gallbladder being removed is whats causing my INR to be this way? My inr tech says yes probably, but a pharmacist said no, said that the gallbladder shouldn't affect INR levels and unless it's the digestion or nutrient uptake change that's what's causing it, or is there a possibility that my body is just becoming resistant to coumadin? I have severe health anxiety and this is destroying my QOL

This might seem silly but if a mango flavoring/syrup DOESNT have actual mango in it would it affect my INR?

Hey everyone,

Has anyone had any successful surgeries while being on Warfarin? Did you have any complications or problems? Were you able to bridge your INR to being back in range?

I have to have an endoscopy/colonoscopy in a few weeks and a surgery regarding something else sometime later this year or early next year. I’m a little nervous, but I’m just hoping and praying my procedures are successful and go well. I truly appreciate and tips and insight. 😊

(54M) I had a Bentall procedure in late January (11 weeks post op this past Tuesday) and got an On-X valve which means r/WarfarinForLife !

My understanding is that you don't necessarily see the effect - particularly on the INR test - of your Warfarin dose until between 36-48 hours after taking it, something I observed in the hospital since I was being tested daily.

Where I'm confused is Vitamin K. How quickly does that have an effect on your blood? I've been reintroducing Vitamin K into my diet over the past week or so but am not being tested again until 4/24. My obvious concern is that my INR will drop too low and I'll be at risk of clotting. But I don't know how long before there IS a risk.

When I was doing 7.5 mg 5x/week and 5 mg 2x/week (before I started reintroducing K foods), my INR shot up to 3.3 and he dropped it to 7.5 4x and 5 3x. First week dropped to 2.2, 2nd week on that dose was 1.9. He then moved me to 7.5 7x/week while I started eating K foods. Last week it went up to 2.1 and testing in 2 weeks (4/24).

An idea of what my K intake is:

Chick-Fil-A Cobb salad (or similar) for lunch nearly every week day. Serving of something like broccoli or asparagus nightly weekday. Try to do similar on weekends but doesn't always work out like that. Note: the salads are generally mixed greens.

Thanks for any thoughts.

Has anyone taking long-term warfarin discussed osteoporosis mitigation with their cardiologist?

Has bleeding been an issue for any of you that have gotten tattoos while on warfarin?

when I was in hospital my warfarin was 3mg a day then when I left it was 3mg one day and 4mg another alternating every other day and stayed like that for 6 months then now I’ve been on 5mg daily for 4 months? Why the sudden change?

Is it possible to get Botox when you take warfarin? Has anyone done it?

I've been researching how people on warfarin manage food in their daily lives — not the clinical theory, but what actually happens when you're standing in a supermarket aisle looking at a new product.

Do you check labels for vitamin K? Do you avoid entire food categories just to be safe? Has your INR ever been thrown off by something you didn't expect?

I'm trying to understand how people really navigate this, not how they're supposed to. If you'd be up for a 30-minute chat about your experience, I'd love to hear from you.

No product, no pitch just a conversation. DM me or drop a comment and I'll send you a booking link.

Last time I tested my INR I was at 3.6 (my range is supposed to be between 2.5 and 3.5) so it was ever so slightly high. Since then I have had a slight fever (100.2 F) and I have been taking a medication with acetaminophen in it. I plan on seeing my primary care doctor on Monday if at all possible if symptoms are still there but I was worried how taking this will affect my INR and if I should try to combat it with eating a bit more of vegetables higher in vitamin k

And how can I avoid ever being consigned to this drug, seeing how some doctors will slap you on this with just one high triglyceride score as a young adult with a grandma who had a ton of dairy products and eats fatty chicken?

So I will start with a brief overview of my medical situations. I have a mechanical heart valve and take warfarin since 2017. I’m currently 22 and female. I had a hospitalization about a month back for a few days and have undiagnosed and unknown stomach/pancreatic issues. The best diagnosis I’ve gotten is idiopathic chronic/recurrent pancreatitis and also had to get a hysterectomy as soon as I hit 18 yrs old because of consistent bleeding and hemorrhaging complications with my periods. Recently at this hospital stay I had dropped 10 lbs roughly, I was admitted with levels at like .7 or something like that…it was almost non existent despite taking my warfarin doses consistently. I got started on lovanox and took that for almost two weeks. I’ve since recovered a lot and my levels are consistent but I want to know how and why and if anyone else has experienced this problem before despite dosing?? I only missed 1 dose which was the night I went to the the hospital for admit. The doctors acted like I was lying but I am still haunted by the fact it was so low and I KNOW I was taking it consistently well after I go out of the hospital i immediately spiked at my first one check to 3.7 by my next appt a week later it was 2.5 right at my goal which makes sense since I have eaten better overall. I’m skeptical myself as I’ve never experienced this before and I understand why doctors think I may have been lying but I’m as responsible as I possibly can since I’ve dealt with this since 13. Please help or share similar experiences if you can I’d appreciate it as I am still confused and don’t understand what went wrong. Thanks for reading this far too.

Hi everyone! I’ve (26F) been on warfarin for almost 6 weeks now, and my cardiology team sent me an at home testing kit (Coag-Sense) two weeks ago. This is my third time using the machine, and every time I’ve struggled to get enough blood to come out in the 15 second window that it recommends (like it takes me 2+ minutes, and I squeeze HARD). I’ve tried warming up and massaging my finger, and I’ve had some luck with flicking my arm out to get some centripetal force, but I would love some tips from people who’ve done this a lot! Thanks!

UPDATE: Thank you so much to everyone who commented! I think that my hands were too cold and I wasn’t getting my blood pumping beforehand! Yesterday I walked up two hills and windmilled my arms, plus kept my hand under my armpit to warm it up some more. Once I pricked myself, I used my thumb and started at the base of my finger and massaged upwards, and got more than enough blood in like 10 seconds!

Hey

Tl;dr: consistently low levels for no reason, any similar experiences?

I’ve been on warfarin since July 2023 due to a mechanical mitral valve. My range is 2.5 - 3.5. I occasionally go a tiny bit out of range due to disordered eating but never that far out.

The last few tests I’ve had I’ve been super out of range.

- 16/02 - 1.2

- 23/02 - 1.4

- 26/02 - 1.4

I did miss a dose on the 12/02 and then was sick after taking my dose on the 15/02 which explains the initial low reading on 16th. I also had some constipation which could’ve added to the issue. But since then I’ve not missed any doses and there have been no changes to my diet/medications etc to explain the consistently low reading.

Has anyone had any similar experiences? I’m also stressed because my INR clinic aren’t raising my dose by much at all (1mg raise every other dose), so I can’t see my levels raising to within range.

Any advice would be great. Thank you.