I have no troubles when taking extra strength Tylenol.If you take it daily for pain and inflammation, and you’re consistent with your dose, then “dosing the diet” should apply here too.
If you take it randomly as needed for pain, it could present challenges in regulating your INR. That said, I’ve taken steroids and anti-inflammatory meds (prescription) for back pain while on warfarin. During treatment, I increased my testing and adjusted my warfarin dosing as needed. I did go out of range to the high side, and was glad when I was done.