Missyluke, best to you on the upcoming surgery. When I had my surgery, instead of Percocet (the combo of Tylenol and Oxycodone) my OS prescribed Oxycodone 5 mg tablets; Vistaril (generic is Hydroxyzine) 25 mg pills; along with Tylenol 500mg pills.
My instruction sheet from the hospital was to start taking the pain meds BEFORE the pain block wore off. I started with 1 Oxy (5mg) every 4 hours AROUND THE CLOCK for the first 24 hours. I was instructed to take 1 Vistaril every 4 hours with it, as needed, to avoid nausea. Once that pain block wore off, I needed more pain control and was told that I could increase it to 2 Oxy (10 mg total) if needed but the on-call doctor gave me permission to take just the 1 Oxy and increase it to taking it every 3 hours instead of every 4 hours and that worked for me. I took the Oxy/Vistaril every 3 hrs for about the first week.
As far as the Tylenol, I started with taking it just every 8 hours, so with every other dose of the Oxy, but on Days 2-7 had to increase it. I was told it was OK but to be careful and NOT go above the dosage on the bottle. The bottle says not to take more than 6 pills (3000 mg) in 24 hours.
I think that the Vistaril (hydroxyzine) actually helped me because it made me sleepy and allowed me to get a lot of rest within the first few days. The pharmacy sheet that came with it said that Vistaril is an antihistamine and often used for allergies - so, no wonder I was sleepy. It also said that Vistaril is also used short term to treat anxiety or help you feel relaxed after surgery. I will say though that when I increased the Oxy to every 3 hrs - I should have kept the Vistaril at no more than every 4 hrs. I had a few wild dreams during that 1st week - giant bunnies and such.
also after a few days - I felt a little light headed and that is a side effect - so I cut back on it and ultimately took the Oxy without it but was glad to have it at first.
In addition to the pain med, I was prescribed one 325 mg of aspirin each day to avoid blood clots and told to take Senekot S if I needed it for constipation (I only took that 2x).
Best of luck to you!