Here is something I read online hope this helps. Best wishes and stay safe.
What are the risks of taking charcoal pills?
If you take a small amount of activated charcoal, it's likely not going to do much to you. But consuming large amounts of activated charcoal could effectively block waste from passing through your body, potentially causing you to become constipated, Robert Weber, R.Ph., Pharm.D., M.S., administrator of pharmaceutical services at The Ohio State University Wexner Medical Center, previously told MensHealth.com
“That's why we give patients potent laxatives when we give them activated charcoal in a poison control situation,” says Weber.
Worse, activated charcoal also has the potential to counteract the beneficial effects of prescription medication. “If you take [charcoal] about the time when you are taking your normal prescription medication … it would limit your ability to absorb [them],” Dr. Michael Lynch, medical director for Pittsburgh Poison Center and assistant professor in the department of emergency medicine at the University of Pittsburgh School of Medicine, told TODAY.
Bottom line: while a small amount of charcoal pills probably isn't going to do anything to you, there's no reason to take them regularly — in fact, in large quantities, they could even potentially be harmful to your health. So maybe keep charcoal in its rightful place: in your BBQ pit.