Replied by Charcoal Dependent from California, US on 08/05/2014

Activated charcoal may have an effect on a fentanyl patch although, not as severe as if you were taking an opioid pill. I still think it would pull some of the fentanyl out of your system. Check with your doctor, and or try a dose or two and see how you feel. No withdrawals intended :) I am a RN who is prescribed a large amount of activated charcoal due to a form of toxicosis. My MD advised me to wait 90 minutes-120minutes between taking charcoal and other medications or supplements. Make sure if you take activated charcoal, that you at least take a multi vitamin. As the article mentioned, charcoal will pretty much absorb the good with the bad.

Replied by Pam E. from SW Calif. on 06/28/2025

Charcoal aDsorbs (electrostatically attracts)... it does NOT aBsorb anything's volume.

It attracts it electrostatically so that what it attracts becomes attached to it ... not aBsorbed by it.

There was a study done on sheep for 6 months ... they were fed 5% Activated Charcoal in their food... .

At the end of the study the sheep were tested & found to have NO nutritional deficiencies... .

The study is found in the: Online Journal of Biological Sciences ...

Investigations : Digestion & Metablism Indices of Sheep When Using Activated Charcoal Supplement https://thescipub.com/pdf/ojbsci.2017.121.127.pdf