Mindfulness with medications and difficult situations

With certain antihistamines I get very drowsy and confuse. I seem to get clingy in these sensations and then when I’m aware of the clinginess, I try to detach the sensations. I just somehow do the opposite of detaching by forcing the detaching and hook up with mind talk. How to keep mindfulness in these situation? And how to be mindful in difficult situations in general? What would be the Buddhism direction on these situation?