Really bad for your stomach and bladder this way, orally is the worst, weakest and most harmful way to take ket. Stay safe.
I am aware that it is more dangerous orally and that ketamine will ruin your bladder when abused long-term.
Like I said, I don't like it very much at all recreationally. I had snorted it only once before and hated it. My usage of ket during withdrawal was at much lower dosages than you would typically use to get high.
Bladder damage usually happens with constant usage and/or constant high dosages. 3 days of therapeutic doses wouldn't be enough to develop any real damage to organs I would think.
I take omeprazole daily already for gastritis funny enough. My stomach felt like it always feels... I didn't notice a difference whilst on some oral ketamine.
I measured the ket and stuck it inside an empty capsule to swallow it. Maybe this helped with any potential stomach troubles?
I have no plans to use ketamine again any time soon anyway. Don't worry

.
I only used it because I googled studies about ketamine to see if it could help in any way with withdrawal from opioids and it was suggested that it could do so.
I thought of anything that could be helpful as I had none of the usual comfort meds in the house apart from Xanax maybe (didn't even have any Imodium) and during Christmas I couldn't have anything shipped (I don't have offline sources for drugs). I was desperate for any relief.
Example of one of the studies I came across:
https://pubmed.ncbi.nlm.nih.gov/16963828/
Ketamine is used as a painkiller in hospital settings so I thought it could help with the body aches etc. at least. That's what led me to googling studies about whether it could help with opioid withdrawal symptoms.
I didn't wanna snort it again because I didn't want to be hit that quick again. Oral is weaker, yes, but that was ok with me. I wasn't looking for pronounced effects. I hate feeling dizzy and that's what I experienced the first time, when I snorted a line of it.
My conclusion is that if you have clonidine, loperamide, gabapentin and maybe a benzo for sleep that those are much better meds than ketamine for withdrawal.
I only got real relief when I IVed that little heroin I had left. I had to take it intravenously because smoking it would have been just a waste for me and I had only a little left so I had to make the most of it.
I appreciate your concern and it's good to remark the potential dangers of ketamine and the different ROAs.