The biggest factor in how it affected me was my complete opiate-naivety. I had never once taken an opiate before, therefore Kratom was subjectively powerful to me. Much like someone taking their first drink or smoking their first joint, I became very intoxicated.
I think the latter is a likelier explanation than a multi-national, multi-continental conspiracy between 14 disparate supply chains to adulterate only my supply of Kratom and no one else's.
> seven years almost every day
After two years, my initial doses of Kratom felt much like a cup of coffee because of tolerance.
Someone who has never taken an opiate before is going to have vastly different responses to Kratom than someone who is well into their 7 year Kratom habit.
Once you've built tolerance and gone through the dependence / withdrawal cycle, you will never have the same consistent response to opiates as you did when you were opiate-naive. Last year, I had the rest of my wisdom teeth taken out. I was prescribed 5mg Vicodin. It helped with the pain, which was very bad, but it honestly wasn't noticeable that I took anything narcotic. 7 years prior I had the same operation and was given the same medication. One 5mg Vicodin has me on my ass for hours back then.