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Travel insurance and blood thinners

Getting travel insurance for blood thinners can be easy. We've found a handful of brands that may cover you if you're on blood thinning medication.

If you’re taking a blood thinner such as warfarin, you'll need to declare why you're taking it to the travel insurer to get the right cover.

Whether you're on the blood thinner for DVT, pulmonary embolism or to prevent a stroke, we've compared a number of travel insurance brands to see how they cover conditions related to blood thinners, and what you need to know when getting your policy.

On blood thinners for a pre-existing condition? Here are some options:


ProviderAre you on blood thinners due to these pre-existing conditions?ConditionsApply
Medibank Travel Insurance


Heart Attack or StrokeYou'll need a medical assessment and will need to pay an additional premium
Get quote
Insure4lessStrokeYou may be able to get cover and you'll need to complete a medical questionnaire
Get quote
Travel Insuranz Travel Insurance Logo

Travel Insuranz

StrokeYou may be able to get cover and you'll need to complete a medical questionnaire
Get quote


StrokeYou may be able to get cover if the stroke occurred more than five years ago. You'll need to get a medical screening and declare your condition
Finder AwardBonus
Get quote
Tick Logo


StrokeYou may be able to get cover and you'll need to complete a medical questionnaire
Get quote
Covermore logo


Heart Attack or StrokeYou'll need a medical assessment and will need to pay an additional premium
Get quote

Picture not described

Travel Insurance Saver

Heart Attack or StrokeOnline medical screening assessment will determine if cover for dementia and Alzheimer's can be provided. Consider the PDS and TMD from TIS and if the product is right for you.
Get quote
Easy Travel Insurance


Heart Attack or StrokeYou'll need a medical assessment and will need to pay an additional premium
Get quote
Picture not described

Australia Post

Heart Attack or StrokeYou'll need a medical assessment and will need to pay an additional premiumMore info

For other conditions, we'd recommend contacting the insurance companies.
Note: This information was last updated August 2022

What do travel insurers say about warfarin and its use?

Taking warfarin and other anticoagulants has important implications for your travel insurance policy. Since warfarin can have a range of serious side effects and potential complications, most insurers class warfarin use as a pre-existing medical condition and can exclude it from cover.

This means that if you take warfarin or any other prescription anticoagulant, any medical claims related to that condition will not be paid if you don't have the appropriate travel insurance policy, or if you haven't declared your condition when buying your policy. For example, bleeding complications, strokes and haemorrhages would not be covered.

With this in mind, if you take warfarin it’s a good idea to approach a number of insurers to find out whether or not any cover will be available to you.

Facts about anticoagulant blood thinners

  • They don’t actually thin your blood. Although they’re referred to as blood thinners, anticoagulants don’t actually affect the thickness of your blood, they just stop it from clotting.
  • They’re different to aspirin. While low-dose aspirin may be referred to as an anti-clotting medication, it works in a completely different way to an anticoagulant like warfarin. Aspirin is an antiplatelet medicine that stops certain types of blood cells binding together.
  • They affect your diet. While some people believe you need to avoid green leafy vegetables when on a blood thinner, this is not true. However, because these types of veggies are rich in vitamin K, which helps your blood to clot, you’ll need to eat the same amount each week to keep your international normalised ratio (INR) stable.
  • They need to be taken consistently. It’s vital that you take your blood-thinning medication at the same time every day, as prescribed by your doctor. If you forget to take a dose, contact your doctor for advice – never take a double dose.
  • They increase your risk of bleeding. Nosebleeds, internal bleeding and bruises are all common side effects when taking blood-thinning medication. Any signs of blood in your urine or stools should be reported to your doctor immediately.
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Do you need to travel with your prescription for blood thinners?

When travelling overseas with prescription medication, it's better to be safe than sorry, so we advise you to take your written prescription with you and keep your medication in its original packaging. There are a couple of reasons for this:

  • Drug laws differ from country to country. Blood thinners aren't typically regulated as tightly as drugs like painkillers, but unless you are a drug law expert in each country, you're better off having evidence that the medication is yours and that it's for a legitimate purpose.
  • Australia doesn't want you selling PBS drugs. Since PBS drugs come at a discount, the Australian government doesn't want you stocking up just so you can sell them overseas for profit. A valid prescription will show how much you need for your trip and what is an appropriate amount for you to take with you for personal use.

What happens if you run out/lose your blood thinners while overseas?

If you lose your prescription while overseas, you've got a few options.

  • See a local doctor. A local doctor might be able to prescribe a local version of your blood-thinning medication. This is another example of how having your original prescription might come in handy, especially if the local doctor wants to see evidence of your condition.
  • Have it sent from Australia. You can have your blood-thinning medication sent from Australia as long as it is legal in the country you're in, is for personal use only and the amount does not violate export regulations. It will need to be accompanied by a letter from your doctor and/or a customs declaration form.

Can you travel while you're on blood thinners?

Blood thinners can help reduce the risk of developing blood clots or making existing blood clots worse when you're sitting still for long periods of time while travelling, like when you're on a plane. As always, it's a good idea to get approval from your doctor before heading off on a long flight.

Tips for flying while on blood thinners

When you're on warfarin or another anticoagulant, you need to take your medication reliably and in a systematic way. Travelling will most likely disrupt your schedule in and of itself, making it more important than ever to pay attention to when and how you take your meds. Here are some tips to help you stay consistent:

  • Have your INR* test before you go. Your INR test helps your doctor determine how much warfarin you need and this can change over time. Getting this test before you leave ensures you're on the right dosage for the duration of your trip.
  • Consider an INR monitor. With a pinprick of blood, you can do your own INR test while travelling. If you'll be gone for a long time or if your treatment requires variable dosing, having your own INR test will let you know if your treatment is working. You can tell your doctor about any discrepancies.
  • Take your record book. If you are on warfarin, you'll have a record book to log your INR results and dosing regimen. If something happens to you, doctors will be able to see that you are taking blood thinners.
  • Stay consistent. It is crucial that you take your medication at the same time every day. Take this into consideration when crossing time zones and set alarms to ensure you stay consistent.
  • Take enough with you. Warfarin dosages can vary based on your INR tests, so make sure you take enough for all possibilities.
  • Be consistent with your salad intake. Travelling can easily disrupt your eating habits, but it is important not to alter your intake of green leafy vegetables. These are high in vitamin K, which is what warfarin targets. It's fine if you eat them, but not if you are inconsistent with it.
  • Get your circulation going. If you're not sure if you have a blood clot or are prone to developing them, then you need to stand up, move around and stretch periodically to decrease your chances of developing one.
  • Seek help if necessary. If you have severe bruising or bleeding, get help immediately. Let doctors know you are on warfarin so they don't prescribe anything that will conflict with it.

*Some of these tips may not apply to other anticoagulants like dabigatran, apixaban and rivaroxaban that do not require an INR test.

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What is deep vein thrombosis and what are the risks when flying?

Deep vein thrombosis (DVT) is caused by blood clotting, most commonly in the large veins of the calf muscles. It occurs as a result of slow blood flow, often caused by inactivity and dehydration (which are both very common on flights).

In some cases, the clots that form can break free and travel to other parts of the body, for example, the heart or lungs. If those clots become trapped in the arteries of the lungs they can result in pulmonary embolism, which can be fatal.

Up to 400 people die each year in Australia as a result of pulmonary embolism, with a small portion of those deaths associated with flying.

Who is at risk of deep vein thrombosis?

There are a number of factors that can increase your risk of suffering from DVT when travelling, including:

  • Increased age
  • Being overweight
  • Smoking
  • Being pregnant
  • Using oral contraceptives
  • Undergoing hormone replacement therapy
  • Having had DVT or a pulmonary embolism before
  • A family history of DVT
  • If you suffer from a blood-clotting disorder, for example thrombophilia
  • Being either very tall or very short
  • Cancer
  • Having undergone surgery in the past two months
  • Suffering from an injury to a lower limb
  • Having recently suffered a severe illness, such as pneumonia or a heart attack

Tips for flying to reduce the risk of deep vein thrombosis

Keep the following tips in mind to help reduce the risk of DVT when you fly:

  • Drink plenty of fluids during flights and avoid alcohol
  • Coffee and tea can also have a dehydrating effect so minimise your consumption
  • Regularly massage your calves
  • Wear loose clothing that will not restrict movement or blood flow
  • Don't take sleeping tablets as they lead to immobility
  • Consider wearing elastic compression stockings
  • Take a short walk immediately after your journey to get your blood flowing once again
  • If you're a high-risk patient, your doctor might advise you to have a heparin injection before flying
  • Exercise your calf and foot muscles regularly when you fly. You can:
      • While seated, bend and straighten your legs, feet and toes every half an hour
      • Walk up and down the aisle once an hour (as long as the flight crew say it is safe to do so)
      • Press the bottom of your feet down hard into the floor or foot rest every now and then to increase blood flow
      • Don't put bags under the seat in front of you – give yourself as much foot and leg room as possible
      • Get up and stretch your legs whenever possible, including if you have a brief airport stopover

By keeping these tips in mind and remaining vigilant, you can ensure that you stay safe and healthy on even the longest of international flights – leaving you free to simply relax and enjoy your holiday.

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Written by


Cristal Dyer is a travel writer at Finder. She has been writing about travel for over five years and has visited over 40 countries around the world. Cristal currently travels full-time, writing about her favourite cities and food finds, and she is always on the lookout for amazing flight deals to share. See full bio

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8 Responses

    Default Gravatar
    IainMay 25, 2023

    Do l need cover for cancer and blood thinners as l am now the cancer is dormant but still need blood thinners

      JamesMay 26, 2023Finder

      Hi Iain,

      It’s best to reach out to an insurer directly to see if they’ll add cover for your pre-existing condition. Generally, a policy won’t automatically include cover for this. I hope this helps.

      Best wishes,


    Default Gravatar
    helenJanuary 4, 2019

    I take Warfarin as a prevention for future clots for PE with unknown cause, 4 years ago. Will vaccinations for overseas travel interfere with the Warfarin?

      CharisseJanuary 5, 2019Finder

      Hi Helen,

      Thanks for reaching out to finder.

      Travel vaccines’ reaction to Warfarin will depend on the drug composition of the vaccine. Some of the common travel vaccines that may have potential drug interaction with Warfarin includes antimalarial drugs and drugs for treatment of traveler’s diarrhea.

      It’s best for you to consult your physician before injecting/taking any travel vaccines to avoid untoward drug reactions and complications.

      I hope this helps.


    Default Gravatar
    PeterAugust 16, 2018

    I was short of breath 5 years ago and had 2 stents inserted. I did not have a stroke and have regular specialist check-ups – all clear.
    I am 77. When I go to disclose this, the only option to declare is ‘stroke’. Is there an insurer with whom I can speak? I don’t care if they don’t cover me for heart, but need cover for accidents, theft etc. Can you point me to an insurer? Best regards Peter

      JohnAugust 16, 2018Finder

      Hi Peter,

      Thank you for leaving a question.

      Though we would not be able to provide a specific insurer for you to approach, you may seek help from a health insurance broker who can take your personal circumstance into account and offer you a range of options.

      Hope this helps!


    Default Gravatar
    PaulJuly 29, 2018

    I was diagnosed with AF on 30.4.18. I was in hospital for 4 days and was prescribed blood thinners for 4 weeks. I am now fine. Do I have to inform my holiday insurance?

      JeniJuly 29, 2018Finder

      Hi Paul,

      Thank you for getting in touch with finder.

      It is nice to know that you are pretty well now. However, you will need to declare any pre-existing conditions prior to your travel to check which travel insurance that would suit you most.

      I hope this helps.

      Please feel free to reach out to us if you have any other enquiries.

      Thank you and have a wonderful day!


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