Is it dangerous to take 975mg of tylenol (acetaminophen)? If no other meds are taken, only 1-2 times. I have prescription meds but rather not be intoxicated!

Guidelines. Guidelines for tylenol (acetaminophen) now recommend that you don't exceed 3000mgs in 24 hours. Don't exceed 1000mgs in a single dose. Therefore 975mgs once or twice in a day is not deemed excessive.
Not neccessarily. Dose of tylenol (acetaminophen) up to 975 (3x) a day for brief periods are acceptable pain management. However meds do have adverse effects and she be taken only as needed.
Tylenol (acetaminophen) Doses for tylenol (acetaminophen) range from 500 mg to 1000 mg. If there are no other liver issues and nothing else to tell you not to use tylenol (acetaminophen) this sounds like a safe and normal dose.