Blood thinner safety: red flags and next steps
Plain-language bleeding precautions and when to seek urgent help.
DrSonia patient handout
Blood thinner safety: red flags and next steps
Take blood thinners exactly as prescribed. Do not start or stop medicines, vitamins, or supplements without checking first.
Get urgent care now for severe or ongoing bleeding, black or bloody stool, vomiting blood, severe headache, new weakness, trouble speaking, chest pain, or shortness of breath.
Call your clinic the same day for easy bruising that is worsening, frequent nosebleeds, blood in urine, or if you miss doses. Bring an up-to-date medication list to every visit.
Educational information to discuss with your health care provider. Reviewed February 7, 2026.
Source
Original handout created for DrSonia. Safety points aligned with Thrombosis Canada education.
References
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