I wake up after taking Xyrem and I have immense pain in my shoulder and arm. I'm pretty sure I may have fallen down the stairs or something, but I can't remember. Well, I took some Tylenol Extra Strength (acetaminophen, 500mg) to tide the pain, but now I'm reading sites that say that is really bad, but the drug interaction sheet only ever has acetaminophen in combination with other active ingredients. Is it okay for me to just take acetaminophen with Xyrem as long as it's not a PM or sleep inducing type?