Were you taking authentic or internet genetics from China/India?

Ive gone through a decent amount of generics over the years, from several sources, and even though the label is the same, they almost all act differently on me. Some give me a flushed red face. Some cause a dull headache. Some don't cause anything negative thank God. They all work though.

I think the Indian/Chinese ones are laced with garbage and what I feel depends on what else was in there.