Does apixaban commonly cause diarrhea?
Diarrhea is a known potential side effect of apixaban. Like other medications, it can affect the gastrointestinal tract and lead to loose or more frequent stools in some people.
How soon after starting apixaban would diarrhea show up?
When diarrhea occurs from apixaban, it typically starts after you begin the medication or after a dose change. For some people it may appear quickly; for others it may develop over the first days to weeks of treatment.
What should you do if you get diarrhea while taking apixaban?
If you develop diarrhea, focus on staying hydrated. If symptoms are mild, many people can monitor at home while continuing the medication as prescribed.
Because apixaban also increases bleeding risk, you should contact a clinician promptly if diarrhea is severe or comes with red flags (for example, black/tarry stools, visible blood, dizziness/fainting, or signs of dehydration). Seek urgent care if symptoms are intense or worsening quickly.
When could diarrhea be a sign of something more serious?
Diarrhea on apixaban can sometimes overlap with conditions that need medical treatment, such as:
- Infectious gastroenteritis
- Colitis (inflammation of the colon)
- Medication interactions or over-anticoagulation effects
If there is any blood in the stool or stool looks black, treat it as a possible bleeding problem and get medical help urgently.
Could diarrhea be caused by something else you’re taking with apixaban?
Yes. Other factors can trigger diarrhea, including:
- Antibiotics
- Magnesium-containing antacids or laxatives
- Alcohol or new dietary changes
- Other prescription or over-the-counter medicines
If you started a new medication around the same time, it can be useful to ask your pharmacist or clinician whether that drug is more likely to be the cause.
Who is more likely to experience it?
Anyone taking apixaban can get gastrointestinal side effects, but risk can be higher if you already have stomach or bowel conditions, are prone to infections, or take additional drugs that irritate the gut or change gut bacteria.
What about stopping apixaban?
Do not stop apixaban on your own. If diarrhea is significant or you’re worried about bleeding or infection, call your prescribing clinician to discuss whether you need evaluation, supportive care, or a change in treatment.
Sources
No sources were provided with your question, so I can’t cite specific references. If you share the medication label/insert you’re using (or a link), I can cite the exact “diarrhea” listing and its frequency category.