I love a good quality DL amphetamine for its amazing euphoria, motivation and energy, but 4-FA is just terrible for me. I got it from the same supplier of regular amphetamine, which by the way was great, but I absolutely did not like 4-FA. I don't feel euphoria from it, it's just some kind of detachment. I don't want to dance or listen to music, I don't care at all due to emotional numbness. This seems to cancel out some of the amphetamine high due to that stupid serotonin slowdown. After a couple of hours I start to get angry because the effects are extremely unsatisfying