Ioflupane I 123 and Methylphenidate Transdermal Patch: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Methylphenidate Transdermal Patch
Ioflupane I 123
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
Interference with ioflupane I 123 imaging
Interaction Deep Dive
Concomitant use of ioflupane I 123 and methylphenidate may result in interference with ioflupane I 123 imaging. It is unknown whether discontinuing methylphenidate prior to ioflupane I 123 administration may minimize the interference. Consider discontinuing methylphenidate due to the potential to impact ioflupane image interpretation for at least 5 biological half-life before administration of ioflupane1.
Why it happens (mechanism)
Competitive binding to the DOPamine transporter
Common questions
Can I take Ioflupane I 123 and Methylphenidate Transdermal Patch together?
Interference with ioflupane I 123 imaging Always confirm with your pharmacist or prescriber before making any change.
How serious is the Ioflupane I 123 and Methylphenidate Transdermal Patch interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
Questions for your pharmacist
- Does my dose of Ioflupane I 123 or Methylphenidate Transdermal Patch need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: DATSCAN intravenous injection, ioflupane I 123 intravenous injection. GE Healthcare, Medi-Physics, Inc, Arlington Heights, IL, 2026. DailyMed
Keep reading about Methylphenidate Transdermal Patch
Keep reading about Ioflupane I 123
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist