Akatsuki has captured Sakura, because Sakura already knows some information about them, so Akatsuki captured Sakura, firstly to prevent her from returning to Konoha to inform the Hokage of their current actions, and secondly, to find a way to eat the current traces of the Kyuubi from Sakura's mouth, so they got a special serum and injected it into her body.
This can cause blurred vision, visual and auditory hallucinations, and increased ejaculation.
Rong stared at the last side effect. □□Enhanced? That's fun
Concept: Xiaoying