Purity - the "what's this cut in this cocaine" thread dumpster (closed)

[Pele]

Swim has only ever had 2 different batches of cocaine. The first batch made him feel like a god for a brief period, and caused considerable numbness of his teeth and face. Nice and mellow, and over all very enjoyable. The comedown was depressing, but it was worth it to get the high he got.

The second batch (an un-cut version of the stuff swim posted about earlier) that he got caused moderate numbing, and the buzz was more like a speedy adderall type feeling. This feeling lasted a relatively short time, and then swim is driven into a disturbing depression that lasts for hours. This is in no way pleasurable, not even close to being worth the rather puny initial effects.

Swims question is, what might this second batch be cut with that would make it have this effect on him? And also the method used to clean the unwanted portion away.