Not sure I understand. You are using 24ks pharma adex? The adex I received from 24k is US pharma.
I've had anastrozole from AstraZeneca, Teva, and the brand that 24k carries. I actually had some of the AstraZeneca leftover until about a month ago. I haven't noticed any differences in potency.
If it isn't working for you I'd strongly suggest getting blood work to see what is going on.
EDIT: Forgot to add... after I get my E2 rise back up (it was crashed per my blood work a few weeks ago)I was ok at 0.25mg EOD. I stupidly bumped up to 0.5 EOD because I felt I was holding too much water. After about 3 doses at 0.5 I started to hate life. Clicking joints, loss of erection stength, and fatigue.
I crash my E2 very easily. I'm going back to 0.25 EOD.
The adex is generic. And manufactured in india.