
Hi!
If you have changed the brand of the patch due to non-availability of the one you use, please inform your doctor about this. The brands can differ regarding the strength of drug released from unit patch area.
The Mylan Fentanyl Patch is usually available in five different sizes. The 3.13, 6.25, 12.5, 18.75, 25 cm2 patches deliver fentanyl at the rate of 12.5, 25, 50, 75 and 100 micrograms/hour, respectively.