naltrexone and activated carbon

[PsyDefects]

A friend of mine is forced to take naltrexone pills by his family and
he is receiving the pill dissolved in water every day because of being
caught one day spitting the pill afterwards. My friend absolutely hates
naltrexone and came up with two ideas in his desperate attempt to get
rid of the pill and indulge in his favorite opiate consumption. The
first one is about putting cotton in his mouth so that the oral
solution of the pill in water will be absorbed in the cotton and the
second one is using activated carbon to absorb the oral solution in the
stomach. He thinks that the activated carbon way is much more stealthy
and wants to know if it's actually going to work. He also needs to know
if daily consumption of activated charcoal has any serious side
effects. Any thoughts?