Thanks guys! I am so afraid of experiencing withdrawal symptoms on top of the normal nausea from recovering from surgery. I am glad to hear that you didn't notice too many differences. I have been clear with my doctors about my fears and my pharmacist has been phenomenal with researching each drug and where it gets absorbed etc. I've been experiencing panic attacks during the past year and am afraid if I feel withdrawal symptoms that I will panic and it will send me into a tailspin. Thanks again for your advice.