No it will not work with clonazepam.
What won't work with Klonopin?
Coffee???
Sorry, no offense but you are wrong there.
As someone who has taken Klonopin for 12 years and drank PROFUSE amounts of coffee I know this for a fact.
But the two DO effect eachother, not with absorption but since I have anxiety and too much coffee can cause anxiety and Klonopin CAN make you tired the two kind of work at cross purposes but you CAN find the right dosage to feel good which is basically what I do EVERY SINGLE DAY haha.
A little coffee and a little Klonopin is best.
Too much coffee you will get anxious and need more Klonopin which isn't good and too much Klonopin you will get tired and want more coffee and thus the cycle begins.
I have been dealing with this cycle for years and it's just one of the reasons why cutting down on coffee is so hard for me but truth be told I COULD do it if I wasn't so addicted to coffee, well really that's PARTIALLY an excuse because I COULD try harder and eventually cut down on it if I just did it REALLY slowly and was consistent and eventually when you drink less coffee you will probably need less Klonopin and vice versa if you are like me.
But no, I have never heard of coffee effecting the absoprtion of Klonopin.
If it's true AT ALL I can tell you it's not true in practice otherwise I wouldn't still get the effects of both daily.