Tylenol is one med that's okay for you to take.
Here's a list of the can and can'ts.
http://www.renewedreflections.com/fo...e-post-op.html
Even if some things are on the can't list, if the prescribing dr knows you've had GBS and still gives you a prescription, it's okay to take is as instructed, b/c your dr will be watching out for any adverse effects.
Also, don't forget to call your surgeon's office and tell them what's up, since you're still early out.
Keep warm, get in lots of liquids and rest well.
((((((HUGS))))))