The idea that the DEA has the manufacturers adulterate the pills with unlisted Gaks is an urban legend of the meth world.
Really? We'll swim can only attest to personal experience. Let's start with some the 120's, the inactive listings haven't changed in two years. However, the extraction technique that swim used two years ago, is obsolete! When I first started Wareami's "better IDEA juice" was the charm. After a while everything changed :o . So did the extraction techniques, ie:tetra trap(aghreich), slanted egull(wareami). A good example as of late is a certain brand of 60's that have only 2 listed inactives. Until recently these pillz were a great source and were cleaned effectively via Str8 to E.(VE's method) Now there is something else in there that cuts yeilds and reduces potency of the final product. Keep in mind the inactive list has not changed.
This is a well covered topic, discussed in another excellent thread by SHORTY, so swim won't go on.