If you have a high opioid tolerance, it can take alot of kratom to feel effects. The alkaloids in kratom are much weaker than strong opioids. For example, I had a a friend that would take a whole ounce of good red vein kratom just to ease oxy withdrawal. No high whatsoever, he would just feel relief of the withdrawal symptoms for a little while.
Yeah man that's very true. I had to take almost 30 grams of Red Bali on one sitting to calm my withdrawal a bit.