Im just wondering dose the tolerance increase faster for fur fent compared to Fentanyl HCL. I notice with Fur Fent i started at 500ug and now i need like 2mg to feel anything and thats within the 2 days that i have used it. Also i was wondering is there a point as to were the tolerance kinda levels off like most opiates i have done the tolerance increases fast to begin but then you reach a point were the same dose will work and you don't need to keep increasing to get the same effects ? I just want to know if its the same with all fent analogues and normal fent hcl or if its just this fur fent thats particularly bad for this.