Hello Marci,
I don't have much advice to give you, except maybe try different things with the Kratom powder.... powerade zero? Crystal Light? Hmmmm.....maybe different 0 cal drinks. I definitely know what you are talking about with the pills, you won't be able to take them after the bypass.
Your post caught my eye.... had never heard of Kratom before, and I am going to look into it for myself. It may not be right for me, but I am always interested in safer alternatives than the meds I am currently taking. I am on 1800 mg of Gabapentin for nerve pain, and it works some. I do not want to go up on my current dosage. I've been on the Gabapentin for about 8 months. In addition to that, I have been taking the maximium daily dosage of tramadol for over 3 years. YUCK.
Also, I want to tell you that I had my revision because of major probs with GERD. Couldn't eat solid food without severe pain.... so I had been doing pureed soups since February, and towards the end (right before my revision), even those were giving me pain. I had my revision on Tues, the 29th. My doctor cleared me for "mushies" on day 5. Had my first scrambled egg yesterday morning.... lo and behold..... NO PAIN! Wow! I couldn't be happier with getting the revision done, even though I am only a week out. Things are finally looking up. I had met my goal weight prior to getting the bypass surgery. I am in the 150's, so not far off from you.
I hope your revision goes well. I imagine that it will really help you a lot. Sorry that I can't be of much help with how to take the Kratom.