II. Precautions: Transdermal Patch
-
Patch is heat sensitive
- Increases absorption and decreases duration
- Affected by fever, Sun Exposure, heating pads, saunas
- Could dangerously increase levels (e.g. Fentanyl)
- Avoid cutting patches unless specifically allowed
- Remove patches before entering MRI
- Many patches have a metallic backing
- Patch disposal
III. Precautions: Water Exposure
- Apply Topical Medications and patches after bath, shower or swimming
- Wait at least 15-30 minutes or until medication dries prior to any water exposure
- Avoid reapplying medications after water exposure (if already applied prior to water exposure)
- Applying medication to moist skin may increase absorption (risk of adverse effects)
- Heat may affect topicals as well as patches (see above)
- Some patches may allow for water exposure, but the patch adhesive may be reduced
- May require medical tape along edges or across the surface to keep secured to skin
- Apply patch in regions that are less easily rubbed off
IV. References
- (2017) Presc Lett 24(7)
- (2021) Presc Lett 28(8): 46-7
