How long does a 50 MCG fentanyl patch last?

I use a 50 and a 12. I put the 50 on the next da the 12, the next the 50...

For now it is adequate and the cycle of one every day prevents the drop if you do both the same day.

You may want to see if your doc will let you get two 25's so you can put one on each day.

According to theft, 88% is used in two days. I actually leave the ones I should take off on. I take them off after the fourth day to get every bit out I can.

It depends on a number of factors, such as location, no black shirts in the sun, no hot tubs and lastly, it has to have good adhesion (first go).

The packets say 72 hours but the consensus here is that 48 to 72 hours is normal. See your pain management/ prescribing doctor.