Sig code: dosage form
XR medical abbreviation
XR means "extended release".
Each meaning matched at least two public references (2 in all for XR), checked October 23, 2026. The table lists them.
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What XR means
| Meaning | Latin origin | Where used | Checked against |
|---|---|---|---|
| extended release | None | Prescriptions, Medication labels |
Example
Sample label text: "XR tablet."
A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.
Related abbreviations
Elsewhere on Rivvi
Questions
What does XR mean in medical terms?
XR means "extended release".
Where is XR used?
XR shows up in prescriptions and medication labels. Its category here is sig code: dosage form.
Is XR on the Joint Commission Do Not Use list?
No. XR is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.